Cook the pasta to al-dente according to package instructions, and drain. *Be sure not to cook too long, because it will continue to cook in the oven!
Preheat oven to 375 degrees Fahrenheit.
In a large baking dish, add the cooked and drained pasta, marinara sauce, heavy cream, peas, olive oil, salt, crushed red pepper, garlic, and Parmesan cheese.
Stir until the ingredients are well-combined, and the pasta is completely coated.
Bake in the oven for 20-22 minutes or until the cheese has melted. Garnish with extra Parmesan cheese, if desired.
Serve warm!
