- 1 tablespoon olive oil
- 1 1/2 cups chopped onion
- 1 cup (1-inch) pieces sweet bell pepper
- 4 cups (1-inch) pieces zucchini
- 1 1/2 cups water
- 1 (6 ounce) can tomato paste
- 4 cloves garlic, crushed
- 1/2 teaspoon dried oregano
- salt and ground black pepper to taste
- Heat olive oil in a skillet over medium-high heat; saute onion and bell pepper until softened, 5 to 10 minutes. Add zucchini, water, tomato paste, garlic, and oregano; cover skillet and simmer over medium-low heat, stirring frequently, until zucchini is softened and transparent, about 20 minutes.