Mini Greek Pizza Muffins

Name: Mini Greek Pizza Muffins
Cook time: 50 min
Total time: 50 min
Cuisine: European, Mediterranean, Greek
Ingredients: 2 tablespoons extra-virgin olive oil; ⅔ cup finely chopped onion; ⅔ cup finely chopped red bell pepper; ⅓ cup whole-wheat pastry flour; ⅓ cup all-purpose flour; 2 teaspoons baking powder; 1 1/2 teaspoons chopped fresh oregano, or 1/2 teaspoon dried; 1 teaspoon sugar; ¼ teaspoon garlic powder; ¼ teaspoon salt; ⅓ cup low-fat milk; ⅓ cup crumbled feta cheese; 1 large egg, well beaten; 2 tablespoons tomato paste; 2 tablespoons chopped kalamata olives