Drain the shells in a colander in the sink. Run cold water over them to stop the cooking. This prevents the shells from sticking to each other now.

Grab a large bowl for your filling mixture today. Combine the ricotta, goat cheese, and grated parmesan cheese well. Add the chopped basil and minced garlic to the bowl.

Crack one egg into the cheese mixture right now. Stir it well until the filling looks very smooth. Add a pinch of salt and black pepper for taste.

Spread half of the marinara sauce in your baking dish. Take one cooked shell and hold it in your hand. Fill it with a big spoonful of the cheese mix.

Place the stuffed shell into the saucy baking dish. Repeat this until all the shells are full and lined. Pour the rest of the sauce over the shell tops.

Sprinkle a lot of mozzarella cheese over the whole dish. Cover the dish with a piece of shiny aluminum foil. Put it in the oven to bake until very bubbly.

Remove the foil for the last ten minutes of baking. This lets the cheese turn a beautiful golden brown color. Serve it hot to your hungry family and friends immediately.