America's Test Kitchen LogoCook's Country LogoCook's Illustrated LogoAmerica's Test Kitchen LogoCook's Country LogoCook's Illustrated Logo

Slow-Cooker Ratatouille

By Carolynn Purpura MacKay

Published on June 24, 2013

Time

4 hours on low

Yield

Serves 8 to 10

Slow-Cooker Ratatouille

Ingredients

2 pounds eggplant, cut into ½-inch pieces3 zucchini (8 ounces each), quartered lengthwise and cut into 1-inch pieces2 red bell peppers, stemmed, seeded, and cut into ½-inch pieces2 onions, chopped½ cup extra-virgin olive oil 1 tablespoon sugar 2 garlic cloves, minced2 teaspoons herbes de Provence 1 (28-ounce) can diced tomatoes, drained¼ cup all-purpose flour Salt and pepper ¼ cup grated Parmesan cheese ¼ cup chopped fresh basil

Before You Begin

Herbes de Provence is a French blend that usually includes rosemary, marjoram, thyme, lavender, and fennel. If you can’t find it, you can use 1 teaspoon each of dried rosemary and dried thyme.

Instructions

  1. Adjust oven rack 4 inches from broiler element and heat broiler. Line 2 rimmed baking sheets with aluminum foil and spray with vegetable oil spray. Combine eggplant, zucchini, bell peppers, onions, 6 tablespoons oil, sugar, garlic, and herbes de Provence in large bowl. Divide vegetables evenly between prepared sheets and spread in single layer. Broil, 1 sheet at a time, until ­vegetables begin to brown, 10 to 12 minutes, rotating sheet halfway through broiling. Transfer broiled vegetables and tomatoes to slow cooker.
  2. Stir flour, 2½ teaspoons salt, and 1 teaspoon pepper into vegetables in slow cooker. Cover and cook until vegetables are tender, about 4 hours on low. Stir in Parmesan, basil, and remaining 2 tablespoons oil. Season with salt and pepper to taste. Serve.
Slow-Cooker Ratatouille
Photography by Keller + Keller. Styling by Catrine Kelty.

Slow-Cooker Ratatouille

Save

Time

4 hours on low

Yield

Serves 8 to 10

Ingredients

2 pounds eggplant, cut into ½-inch pieces
3 zucchini (8 ounces each), quartered lengthwise and cut into 1-inch pieces
2 red bell peppers, stemmed, seeded, and cut into ½-inch pieces
2 onions, chopped
½ cup extra-virgin olive oil
1 tablespoon sugar
2 garlic cloves, minced
2 teaspoons herbes de Provence
1 (28-ounce) can diced tomatoes, drained
¼ cup all-purpose flour
Salt and pepper
¼ cup grated Parmesan cheese
¼ cup chopped fresh basil

Test Kitchen Techniques

Ingredients

2 pounds eggplant, cut into ½-inch pieces
3 zucchini (8 ounces each), quartered lengthwise and cut into 1-inch pieces
2 red bell peppers, stemmed, seeded, and cut into ½-inch pieces
2 onions, chopped
½ cup extra-virgin olive oil
1 tablespoon sugar
2 garlic cloves, minced
2 teaspoons herbes de Provence
1 (28-ounce) can diced tomatoes, drained
¼ cup all-purpose flour
Salt and pepper
¼ cup grated Parmesan cheese
¼ cup chopped fresh basil

Test Kitchen Techniques

Ingredients

2 pounds eggplant, cut into ½-inch pieces
3 zucchini (8 ounces each), quartered lengthwise and cut into 1-inch pieces
2 red bell peppers, stemmed, seeded, and cut into ½-inch pieces
2 onions, chopped
½ cup extra-virgin olive oil
1 tablespoon sugar
2 garlic cloves, minced
2 teaspoons herbes de Provence
1 (28-ounce) can diced tomatoes, drained
¼ cup all-purpose flour
Salt and pepper
¼ cup grated Parmesan cheese
¼ cup chopped fresh basil

Test Kitchen Techniques

Why This Recipe Works

The slow cooker is tailor-made for long-cooked stews, but this Provençal dish is chock-full of watery vegetables, and the cooker doesn’t allow for any evaporation—a recipe for bland, runny ratatouille. Draining the canned tomatoes was a good start, and adding some flour at the outset helps, too. In the end, tossing the chopped vegetables with olive oil and a little sugar and broiling them before they go into the slow cooker not only adds flavorful browning but also drives off moisture, creating a stewy—not soupy—dish. Garlic and herbes de Provence season the ratatouille as it cooks, and Parmesan cheese and fresh basil finish it off.

Before You Begin

Herbes de Provence is a French blend that usually includes rosemary, marjoram, thyme, lavender, and fennel. If you can’t find it, you can use 1 teaspoon each of dried rosemary and dried thyme.

Instructions

  1. Adjust oven rack 4 inches from broiler element and heat broiler. Line 2 rimmed baking sheets with aluminum foil and spray with vegetable oil spray. Combine eggplant, zucchini, bell peppers, onions, 6 tablespoons oil, sugar, garlic, and herbes de Provence in large bowl. Divide vegetables evenly between prepared sheets and spread in single layer. Broil, 1 sheet at a time, until ­vegetables begin to brown, 10 to 12 minutes, rotating sheet halfway through broiling. Transfer broiled vegetables and tomatoes to slow cooker.
  2. Stir flour, 2½ teaspoons salt, and 1 teaspoon pepper into vegetables in slow cooker. Cover and cook until vegetables are tender, about 4 hours on low. Stir in Parmesan, basil, and remaining 2 tablespoons oil. Season with salt and pepper to taste. Serve.

Gift This Recipe

Enjoyed this dish? Let others know by sharing it as a gift recipe.

This is a members' feature.