I make this while the oven preheats, totally convenience items that are always on hand. This meal takes maybe 20 minutes start to finish at my house. I use petite diced tomatoes in a glass jar from Del Monte that are seasoned with oregano, garlic, and basil. However any petite diced or diced canned tomatoes will work, look for ones with italian seasonings. If the diced tomatoes are large chop them roughly or use kitchen shears to hack them up a little. Sometimes I sprinkle with italian seasoning or parmesan cheese before baking, depending on how hungry we are!