Sometimes, I'll glance at a recipe's ingredients and just know, in my heart, that it's going to taste amazing. That's exactly how I felt the first time I laid eyes on the Barefoot Contessa's tomato sandwich recipe. Traditionally, this kind of sandwich only has a few ingredients: two slices of bread, some tomatoes, mayonnaise, salt, and pepper. Ina Garten's recipe, however, kicks the sandwich up a notch with a mayo that has a large cast of flavors, including basil.