Slow Cooker Chicken Ratatouille With White Beans

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This slow cooker chicken ratatouille is a tomato-rich dinner with boneless chicken thighs, white beans, eggplant, bell peppers, and zucchini. It is especially useful when late-summer vegetables are plentiful and busy school-week evenings call for a dinner with little active cooking. Zucchini and white beans go in near the end, which helps the vegetables stay distinct and keeps the finished dish hearty rather than thin.

Quick answer: why this is a useful protein-focused dinner

Ratatouille is traditionally a vegetable-forward dish, and this version turns it into a more substantial meal by cooking chicken thighs in the tomato base and folding in white beans near the finish. There is no broth in the recipe, so the vegetables cook in their own juices with crushed tomatoes and tomato paste instead of becoming soup.

The early layers of eggplant, peppers, tomatoes, and chicken have time to soften and develop flavor. Zucchini needs much less time, so adding it later gives it a tender bite instead of a mushy texture. Serve the finished chicken ratatouille in bowls on its own, or stretch it with farro, rice, creamy polenta, or crusty bread.

Ingredients for slow cooker chicken ratatouille

• 2 tablespoons olive oil
• 2 tablespoons tomato paste
• 4 cloves garlic, finely chopped
• 1 teaspoon kosher salt, divided
• 1 teaspoon dried Italian seasoning
• 1/2 teaspoon black pepper
• 1 can, 28 ounces, crushed tomatoes
• 1 medium eggplant, about 1 1/4 pounds, cut into 1-inch cubes
• 2 bell peppers, red, yellow, or a combination, cut into 1-inch pieces
• 2 pounds boneless, skinless chicken thighs
• 2 medium zucchini, about 1 pound total, cut into 1/2-inch half-moons
• 1 can, 15 ounces, cannellini beans or other white beans, drained and rinsed
• 1 tablespoon lemon juice
• 1/4 cup loosely packed fresh basil leaves, torn
• 1 teaspoon finely grated lemon zest, optional

Practical ingredient swaps

Chicken thighs are well suited to the longer slow-cooker cook time. Boneless, skinless chicken breast can be used, but it can dry out sooner. Check it at the early end of the cooking range and remove it as soon as it reaches a safe internal temperature.

Cannellini beans can be replaced with great northern beans or navy beans. All are mild white beans that add body without competing with the vegetables.

If eggplant is not available, use another bell pepper instead. The dish will still be flavorful, though it will have less of eggplant's soft, silky texture. Do not add extra zucchini at the beginning to replace it, since zucchini breaks down much faster.

Fresh ripe tomatoes can replace canned crushed tomatoes only if they are peeled and chopped, then cooked down first. Canned crushed tomatoes are the more reliable choice for a thick, steady tomato base in the slow cooker.

How to make slow cooker chicken ratatouille

Use a 5 to 6 quart slow cooker for this recipe.

1. In the slow-cooker insert, stir together the olive oil, tomato paste, garlic, 1/2 teaspoon of the salt, Italian seasoning, black pepper, and crushed tomatoes.
2. Add the eggplant and bell peppers. Turn them in the tomato mixture so they are lightly coated.
3. Nestle the chicken thighs into the vegetables and sauce. Sprinkle the chicken with the remaining 1/2 teaspoon salt.
4. Cover and cook on LOW for 4 to 5 hours or on HIGH for 2 1/2 to 3 1/2 hours. The eggplant should be tender, and the chicken must reach 165°F in the thickest part when checked with a food thermometer.
5. Transfer the cooked chicken to a plate. Stir the zucchini and drained white beans into the slow cooker. Cover and cook on HIGH for 30 to 45 minutes, or on LOW for 45 to 60 minutes, until the zucchini is tender but still holds its shape.
6. While the zucchini cooks, shred the chicken with two forks or cut it into bite-size pieces. Return the chicken to the slow cooker.
7. Stir in the lemon juice and basil. Taste and add a small pinch of salt or pepper only if needed. Spoon into bowls and finish with lemon zest, if using.

How to serve chicken ratatouille

For an easy weeknight bowl, ladle the chicken ratatouille over cooked farro, brown rice, white rice, or polenta. Farro is a particularly good option when you want a chewy grain that stands up to the saucy vegetables.

Crusty bread is useful for scooping up the tomato sauce, while a simple green salad with a lemony vinaigrette adds a crisp contrast. If you are packing leftovers for lunches, keep grains in separate containers when possible. That helps them retain a better texture after reheating.

Tips for thicker sauce and better vegetable texture

The recipe avoids added broth because eggplant, peppers, zucchini, and tomatoes all release moisture as they cook. A few small choices also make a difference.

• Cut the eggplant and peppers into roughly 1-inch pieces so they can cook down without disappearing completely.
• Use zucchini half-moons that are about 1/2 inch thick. Thin slices soften too quickly.
• Add zucchini only after the chicken and longer-cooking vegetables are tender.
• Drain and rinse the beans before adding them. This prevents excess canning liquid from loosening the sauce.
• If the sauce is thinner than you prefer after the zucchini cooks, use a slotted spoon to transfer the chicken and vegetables to a serving bowl. Simmer the remaining sauce in a saucepan over medium heat until it thickens slightly, then spoon it over the dish.

Meal prep, storage, and reheating

This recipe makes six portions, making it practical for several dinners or a mix of dinners and lunches. Divide the cooled chicken ratatouille into shallow containers so it chills promptly.

Refrigerate leftovers for 3 to 4 days. For longer storage, freeze portions in freezer-safe containers. Leave a little space at the top for expansion. Zucchini will be softer after freezing and reheating, but the dish remains useful for grain bowls, soups, or spooning over polenta.

Thaw frozen portions in the refrigerator. Reheat leftovers on the stovetop over medium-low heat or in the microwave until the center reaches 165°F. Add a small splash of water only if the sauce has thickened more than you like during storage.

MACRO SIMMER RECIPE

Slow Cooker Chicken Ratatouille With White Beans

A tomato-rich slow cooker dinner with chicken thighs, white beans, eggplant, bell peppers, and late-added zucchini.

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PREP

20 minutes

COOK

4 hours 30 minutes to 6 hours

TOTAL

4 hours 50 minutes to 6 hours 20 minutes

YIELD

6 servings

SLOW COOKER

5 to 6 quart slow cooker

SAFE TEMP

165°F for chicken

EquipmentSlow cooker, cutting board, knife, can opener, measuring spoons, food thermometer, two forks or knife

Scale ingredients

1×2×3×

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Ingredients

• 2 tablespoons olive oil
• 2 tablespoons tomato paste
• 4 cloves garlic, finely chopped
• 1 teaspoon kosher salt, divided
• 1 teaspoon dried Italian seasoning
• 1/2 teaspoon black pepper
• 1 can, 28 ounces, crushed tomatoes
• 1 medium eggplant, about 1 1/4 pounds, cut into 1-inch cubes
• 2 bell peppers, cut into 1-inch pieces
• 2 pounds boneless, skinless chicken thighs
• 2 medium zucchini, about 1 pound total, cut into 1/2-inch half-moons
• 1 can, 15 ounces, cannellini beans, drained and rinsed
• 1 tablespoon lemon juice
• 1/4 cup loosely packed fresh basil leaves, torn
• 1 teaspoon finely grated lemon zest, optional

Instructions

1. 1Stir the olive oil, tomato paste, garlic, 1/2 teaspoon salt, Italian seasoning, black pepper, and crushed tomatoes together in a 5 to 6 quart slow cooker.
2. 2Add the eggplant and bell peppers, stirring to coat them in the tomato mixture.
3. 3Place the chicken thighs on top and season with the remaining 1/2 teaspoon salt.
4. 4Cover and cook on LOW for 4 to 5 hours or on HIGH for 2 1/2 to 3 1/2 hours, until the eggplant is tender and the chicken reaches 165°F when measured with a food thermometer.
5. 5Move the chicken to a plate. Stir in the zucchini and white beans. Cover and cook on HIGH for 30 to 45 minutes or on LOW for 45 to 60 minutes, until the zucchini is tender.
6. 6Shred or chop the chicken and return it to the slow cooker. Stir in the lemon juice and basil.
7. 7Serve warm, topped with lemon zest if desired.

Allergens

This recipe does not contain any of the major allergens as written. Check canned beans, crushed tomatoes, and seasoning blends if preparing food for someone with a specific allergy or sensitivity.

Substitutions

Use great northern beans or navy beans in place of cannellini beans. Substitute another bell pepper for the eggplant if necessary. Boneless, skinless chicken breast may replace thighs, but begin checking it at the earliest cooking time and remove it once it reaches 165°F.

Storage, freezing and reheating

Cool leftovers promptly and refrigerate in shallow containers within 2 hours. Store refrigerated leftovers for 3 to 4 days. Freeze portions for longer storage, then thaw in the refrigerator. Reheat to 165°F before serving.