1 medium eggplant, peeled
2 red bell peppers, seeded
1 red onion, peeled
2 garlic cloves, minced
3 tablespoons good olive oil
1 1/2 teaspoons kosher salt
1/2 teaspoon freshly ground black pepper
1 tablespoon tomato paste

Preheat the oven to 400°F.

Cut the eggplant, bell pepper, and onion into 1-inch cubes. Toss them in a large bowl with the garlic, olive oil, salt, and pepper. Spread them on a baking sheet. Roast for 45 minutes, until the vegetables are lightly browned and soft, tossing once during cooking. Cool slightly.