Find recipes for Vegetarian Tacos and other Course recipes. Get all the best recipes at . Recipe directions: In a large bowl, combine the tomatoes, green peppers, onions, taco seasoning and oil. Arrange in a single layer on two 15-in. x 10-in. x 1-in. baking pans. Bake, uncovered, at 475° for 20-25 minutes or until lightly browned.