Can you say, Yum? So did everyone who ate this Tortellini Casserole dish. Easy, cheesy, hearty and delicious. Tortellini Casserole Ingredients 2 tablespoons of olive oil 1 pound of lean ground beef Small onion, diced 3 garlic cloves, minced 1 teaspoon of kosher salt Freshly ground black pepper, to taste 1 (28oz can) of crushed