Simmered Black Beans

Ingredients

• 1 cup chopped onion
• 1/2 cup chopped green bell pepper
• 2 tablespoons olive oil
• 1 clove garlic, finely chopped
• 1/2 teaspoon ground cumin
• 1/2 teaspoon chili powder
• 1 (16 ounce) can black beans, rinsed and drained
• 1 cup canned diced tomato
• 1/4 teaspoon dried thyme
• salt & freshly ground black pepper