6largeTomatoesDepending on the size of your tomatoes, you may use 4-6 total.
1mediumOnionFinely chopped sweet onion
1cupGrated sharp cheddar cheese
1/2cupGrated Parmesan cheese
1/2cupGrated Asiago cheese
1cupMayonnaiseI use Dukes mayonnaise
1/2cupChopped fresh basil
1Bread crumbsYou’ll sprinkle bread crumbs on the layers of tomato slices as you build your pie
1Salt and pepper to taste
Slice tomatoes and allow to drain on paper towels for 30 minutes or so. You will want the tomatoes to drain as much as possible before baking so your pie is not soggy.
Pre-bake the frozen pie crust according to package directions and allow to cool.
Layer tomato slices in the pie crust by mounting them pretty high in the shell. In between the layers of tomatoes, sprinkle the chopped fresh basil along with some bread crumbs. This will absorb additional moisture from the tomatoes.
Sprinkle chopped onions on top of the mounted tomatoes.
Mix grated cheeses with the mayonnaise and spread on top of the onions. This is like icing a cake as you will want to completely cover the top of the pie and you may need to add a little more mayo or cheeses to get the consistency you want. I also sprinkle extra Parmesan cheese on top of the pie so it browns nicely.
Bake at 350 degrees for 35 minutes or until top of pie is slightly browned.