Preheat the oven to 375F degrees and bring a pot of salted water to a rapid boil.
In a large bowl, mix the ground beef, bread, ricotta, egg, garlic and seasoning by hand until well combined.
Add the pasta shells to the boiling water for half of the cooking time on the package. Strain the pasta and lightly toss with olive oil so it won't stick together. In a 9x9 baking dish, line the bottom with your favorite pasta sauce. I like to make creamy vodka sauce for this but marinara is just as good.
Stuff each shell with a heaping spoonful of the beef mixture and placed in the saucy baking dish.Once all the shells are stuffed, cover completely with sauce. Top with mozzarella and Parmesan and bake for 35-40 minutes, until bubbling and the cheese is golden brown.
Let stand for 10 minutes and enjoy!