Slow Cooker Ratatouille Recipe

If you’re looking for a comforting, veggie-packed meal that basically cooks itself while you go about your day, you’re going to absolutely love this Slow Cooker Ratatouille Recipe. It’s one of those dishes that’s hearty yet fresh, perfect for warm-weather dinners or cozy nights. Plus, using a slow cooker means you can set it and forget it, which I can’t recommend enough when life gets busy. I can’t wait to walk you through this because it’s become a favorite around my kitchen and I bet you’ll love it, too!

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Why You’ll Love This Recipe

  • Hands-off Cooking: You toss everything in the slow cooker and let it work its magic while you do other things.
  • Rich, Deep Flavors: Slow cooking really brings out the natural sweetness and complexity of the vegetables.
  • Versatile Meal: Eat it as a main, side, or toss it with rice, pasta, or polenta for a complete meal.
  • Great for Meal Prep: It stores and reheats beautifully, making it perfect for busy weeknights or leftovers.

Ingredients You’ll Need

This Slow Cooker Ratatouille Recipe thrives on fresh, vibrant vegetables that all play a part in building those classic Provencal flavors. Keep an eye out for firm eggplants and zucchinis, and if you can, grab some fresh herbs to finish it off beautifully.

  • Eggplant: I always salt and drain it first to get rid of any bitterness and prevent sogginess.
  • Zucchini: Adds a lovely mild sweetness and texture that cooks evenly with the other veggies.
  • Red and Orange Bell Peppers: They bring color and a subtle fruity flavor that brightens the dish.
  • Tomatoes: You can use fresh or canned depending on the season, but fresh gives such a nice freshness I love.
  • Onion and Garlic: Sautéing these first awakens their flavors, so the whole dish tastes more robust.
  • Tomato Paste: This thickens the sauce and adds richness—don’t skip it!
  • Balsamic Vinegar: A splash really lifts all the flavors with its tangy sweetness.
  • Herbs de Provence or Italian Seasoning: These dried herbs bring a hint of the Mediterranean, making it authentic and aromatic.
  • Olive Oil: Use good quality extra virgin olive oil for the best flavor and velvety texture.
  • Salt and Pepper: Essential for seasoning and balancing the natural sweetness of the vegetables.
  • Fresh Basil (optional): I like sprinkling chopped basil on top for a bright, fragrant finish.
  • Red Pepper Flakes (optional): Adds just a touch of heat if you want to spice things up.
Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Variations

The beauty of this Slow Cooker Ratatouille Recipe is how easy it is to tweak based on what you have, your tastes, or dietary needs. I’ve tried lots of versions, and you’ll find your go-to in no time.

  • Make it Vegan or Vegetarian: It’s naturally vegan, but I love adding a sprinkle of nutritional yeast or vegan Parmesan for a cheesy umami kick.
  • Spice it Up: When I want a bit more heat, I add extra red pepper flakes or a pinch of smoked paprika – so good!
  • Add Protein: Throw in some cooked chickpeas or serve alongside grilled chicken or fish if you want to make it more substantial.
  • Season Variation: Fresh herbs like thyme or oregano can replace the dried Herbs de Provence, giving a fresher herbal note.

How to Make Slow Cooker Ratatouille Recipe

Step 1: Prep and Salt the Eggplant

This step is a game-changer. Chop the eggplant into roughly 1-inch cubes, then sprinkle with salt and set it in a colander over a bowl. Let it sit for at least 15 minutes – this pulls out any bitterness and excess moisture that can make your ratatouille watery. After that, rinse and pat dry well. Trust me, this keeps the texture perfect and prevents the veggies from turning mushy later on.

Step 2: Sauté Onions, Garlic, and Tomato Paste

While the eggplant is draining, heat the remaining olive oil in a large skillet on medium heat. Add your diced onion and cook until soft and translucent – about 5 minutes. Then toss in the garlic, stirring for 1-2 minutes until fragrant. Finally, add the tomato paste and cook it down until it turns a deep red, around 2 minutes. This little step adds a rich depth of flavor that your slow cooker can’t quite develop on its own.

Step 3: Combine Everything in the Slow Cooker

Spray or coat your slow cooker with a tablespoon of olive oil to prevent sticking. Add the eggplant, zucchini, both bell peppers, the chopped tomatoes, and your onion mixture. Season with balsamic vinegar, herbs de Provence, the remaining salt, and pepper. Give it a gentle stir to mix everything, but don’t overdo it—you want the veggies to keep their shape.

Step 4: Cook Low and Slow

Cover and cook on high for 2 to 3 hours or low for 4 to 5 hours, stirring once or twice if you can. The key with this Slow Cooker Ratatouille Recipe is patience—the slow heat softens the vegetables and melds their flavors without turning them mushy. You want tender, melt-in-your-mouth veggies that still hold a little bite.

Step 5: Garnish and Serve

Right before serving, sprinkle with freshly chopped basil and a pinch of red pepper flakes if you like some heat. It adds a burst of color and aroma that makes the dish feel fresh and vibrant, even after slow cooking for hours.

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Pro Tips for Making Slow Cooker Ratatouille Recipe

  • Don’t Skip Salting the Eggplant: This little trick removes bitterness and improves texture, making all the difference in the final dish.
  • Sauté Tomato Paste and Aromatics First: Cooking them in olive oil develops a richer flavor that the slow cooker alone can’t create.
  • Stir Gently and Occasionally: Stirring helps distribute the flavors, but don’t overmix or the veggies will lose their shape.
  • Use Fresh Basil for Garnish: Add it last to retain its fresh, bright flavor – it really lifts this humble dish.

How to Serve Slow Cooker Ratatouille Recipe

The image shows two white plates with a colorful vegetable dish made of chopped red tomatoes, green zucchini, purple eggplant, and orange bell peppers, topped with fresh green basil leaves. One plate has a piece of golden toasted bread placed on the right side. Above the plates on the white marbled surface, there is a white plate with three more golden toasted bread slices. To the left of the plates, there is a small white bowl filled with red chili flakes, and to the right, a small wooden bowl holds more fresh green basil leaves. The overall scene is bright, fresh, and clean. photo taken with an iphone --ar 4:5 --v 7

Garnishes

I always go with fresh chopped basil on top—there’s something about the aroma that says “summer.” Sometimes I throw in a little sprinkle of red pepper flakes for depth and a hint of heat. If I’m feeling extra fancy, a drizzle of good olive oil right before serving adds just the right touch.

Side Dishes

This Slow Cooker Ratatouille Recipe shines served over creamy polenta or alongside fluffy rice. I’ve also tossed it with cooked pasta when I want a quicker meal. If you’re craving carbs, toasted crusty bread is unbeatable for scooping up all that saucy goodness.

Creative Ways to Present

For a dinner party, I like to serve ratatouille layered in individual ramekins with a sprinkle of parmesan and fresh herbs on top for a pretty presentation. It also pairs beautifully as a side next to grilled meats or fish, making it feel gourmet but without much extra work.

Make Ahead and Storage

Storing Leftovers

I store leftovers in airtight containers in the fridge and they keep beautifully for up to 4 or 5 days. Actually, I find the flavors deepen overnight, so it’s a great lunch the next day too.

Freezing

I’ve frozen this ratatouille before with success—just let it cool completely then portion it into freezer-safe containers. It keeps well for up to 3 months. When thawed, the texture remains pleasantly soft, making it perfect for quick meals on busy days.

Reheating

The best way I’ve found to reheat slow cooker ratatouille is gently on the stove over low heat, stirring occasionally to warm it evenly. Microwave works too if you’re in a hurry—just cover loosely and stir halfway through to prevent hot spots.

FAQs

  1. Can I use canned tomatoes instead of fresh tomatoes in this Slow Cooker Ratatouille Recipe?

    Absolutely! Using canned whole tomatoes works perfectly if fresh tomatoes aren’t in season or if you want to save prep time. Just drain them slightly to avoid excess liquid and chop or crush before adding to the slow cooker.

  2. How do I prevent the vegetables from getting too mushy in the slow cooker?

    Salting and draining the eggplant beforehand helps a lot, as does cutting vegetables into uniform, bite-sized pieces. Also, avoid over-stirring during cooking. Cook on low for a slower, gentler heat or keep an eye on the time when using high heat.

  3. Can I add protein to this recipe?

    You sure can! Chickpeas blend beautifully into ratatouille for a plant-based protein boost. Alternatively, serve the ratatouille alongside grilled chicken, beef, or fish to turn it into a heartier meal.

  4. Does this recipe freeze well?

    Yes, it freezes wonderfully. Just cool completely before freezing in portions, and thaw overnight in the fridge. Reheat gently on the stove for the best texture.

Final Thoughts

I can’t tell you how often this Slow Cooker Ratatouille Recipe has come to my rescue when I wanted a warm, nourishing meal with minimal effort. It’s colorful, flavorful, and feels like a big hug in a bowl whenever I make it. Whether you’re new to slow cooking or a seasoned pro, this recipe is a guaranteed winner in my book. Give it a go—you’ll be surprised how simple it is to create something that tastes this fantastic!

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Slow Cooker Ratatouille Recipe

Slow Cooker Ratatouille Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.8 from 52 reviews
  • Author: Jessica
  • Prep Time: 15 minutes
  • Cook Time: 3 hours
  • Total Time: 3 hours 15 minutes
  • Yield: 10 servings
  • Category: Side Dish
  • Method: Slow Cooking
  • Cuisine: French
  • Diet: Vegetarian

Description

A flavorful and comforting Slow Cooker Ratatouille recipe featuring tender eggplant, zucchini, bell peppers, tomatoes, and aromatic herbs slow-cooked to perfection. This easy vegetable stew is perfect as a side dish or served over rice, pasta, or toasted bread.


Ingredients

Vegetables

  • 1 eggplant, chopped into 1-inch cubes
  • 1 onion, diced
  • 3 cloves garlic, minced
  • 2 zucchinis, cut into quarters lengthwise and sliced
  • 1 red bell pepper, cut into 1-inch pieces
  • 1 orange bell pepper, cut into 1-inch pieces
  • 3 tomatoes, roughly chopped

Seasonings & Others

  • 2 tablespoons olive oil, divided
  • 2 teaspoons salt, divided
  • 3 tablespoons tomato paste
  • 1 tablespoon balsamic vinegar
  • 1 teaspoon Herbs de Provence or Italian seasoning
  • ½ teaspoon pepper
  • Fresh basil chopped (optional)
  • Red pepper flakes (optional)


Instructions

  1. Prepare the Slow Cooker: Coat a 4-6 quart slow cooker with 1 tablespoon of olive oil to prevent sticking and enhance flavor.
  2. Drain the Eggplant: Place the chopped eggplant in a colander over a large bowl and sprinkle with 1 teaspoon of salt. Allow the excess liquid to drain for at least 15 minutes. Then rinse and drain well to reduce bitterness. Set aside.
  3. Sauté Onion and Garlic: In a large skillet, heat the remaining 1 tablespoon of olive oil over medium heat. Add the diced onion and sauté until translucent, about 5 minutes. Add the minced garlic and sauté for another 1-2 minutes until soft and fragrant.
  4. Add Tomato Paste: Stir in the tomato paste and cook, stirring frequently, until it darkens to a rich red color, about 2 minutes. Remove from heat and set aside.
  5. Combine Ingredients in Slow Cooker: Add the drained eggplant, zucchini, red and orange bell peppers, chopped tomatoes, and the sautéed onion and garlic mixture to the slow cooker. Add balsamic vinegar, Herbs de Provence or Italian seasoning, the remaining 1 teaspoon salt, and pepper. Gently stir until everything is evenly combined.
  6. Cook the Ratatouille: Cover the slow cooker and cook on high for 2-3 hours or on low for 4-5 hours, stirring occasionally, until the vegetables are tender and flavors melded.
  7. Serve: Spoon the ratatouille into bowls or over a grain of choice and top with freshly chopped basil and a sprinkle of red pepper flakes if desired.

Notes

  • Store leftover ratatouille in a covered container in the refrigerator for 4-5 days. Reheat on the stove or microwave before serving.
  • Ratatouille can be served on toasted bread, over rice, polenta, mixed with pasta, or as a flavorful side dish.
  • Fresh tomatoes can be substituted with canned whole tomatoes if fresh are not available.

Nutrition

  • Serving Size: 1 cup
  • Calories: 110
  • Sugar: 7g
  • Sodium: 400mg
  • Fat: 7g
  • Saturated Fat: 1g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 12g
  • Fiber: 4g
  • Protein: 2g
  • Cholesterol: 0mg

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