Choosing the Right Ingredients The success of baked stuffed peppers and tomatoes starts with selecting fresh, quality ingredients. Here’s what to look for: Green Peppers : Choose firm peppers with smooth skin and no soft spots. Medium to large sizes work best to hold the stuffing. In America, the best peppers to use are cubanelle. Tomatoes : Opt for firm, ripe tomatoes that are large enough to hollow out. Beefsteak or large vine tomatoes are ideal. Ground Beef : Use lean grou