Disney's Ratatouille Recipe

Name: Disney's Ratatouille Recipe
Cuisine: European, Mediterranean, French
Ingredients: 1/2 onion, chopped; 1/4 cup minced garlic; 1 tablespoon olive oil; 3/4 cup water salt and ground black pepper to taste; 1 small eggplant, trimmed and very thinly sliced; 1 zucchini, trimmed and very thinly sliced; 1 yellow squash, trimmed and very thinly sliced; 1 red bell pepper, cored and very thinly sliced; 1 yellow bell pepper, cored and very thinly sliced; 3 tablespoons olive oil, or to taste 1; teaspoon fresh thyme leaves, or to taste; 3 tablespoons mascarpone cheese