heat, put your 1 tablespoon olive oil into your pan, and let it heat up. cook your chopped yellow onion, green pepper, and garlic in your pan until light brown. mix all of your ingredients together (including what you just cooked in the pan) aside from the tomato sauce in a large bowl. put your mix into a bread dish. add your tomato sauce to the top. bake on 350°f/176°c for 45:00-60:00. enjoy! 