Preheat the oven to 375 degrees f. Spray a 9 x 13-inch baking dish with non-stick cooking spray or olive oil.
Brown the ground beef in a large skillet. Drain the grease and return the meat to the pan. Add the marinara, oregano, basil, minced garlic, salt, and pepper. Simmer over low heat for 5 minutes. Stir in the half-and-half and remove from the heat.
1 pound Ground Beef, 24 ounces Marinara Sauce, 3 cloves Garlic, 1 teaspoon Oregano, 1 teaspoon Basil, 1/2 teaspoon Salt, 1/2 teaspoon Black Pepper, 1/2 cup Half and Half
Spread a thin layer of the sauce mixture on the bottom of the prepared baking dish (about ¼ cup). Arrange half of the ravioli in a single layer over the sauce. Add half the sauce over the ravioli and top with half of the mozzarella cheese. Repeat the layering process with the remaining ravioli, marinara sauce, and shredded mozzarella cheese.
20 ounces Frozen Cheese Ravioli, 8 ounces Mozzarella Cheese
Cover the baking dish with aluminum foil (spray the foil with no-stick cooking spray to keep the cheese from sticking) and bake for 30 minutes.
After 30 minutes, remove the foil from the baking dish and continue baking for 15 minutes or until the cheese is golden brown and slightly crispy on top.
Remove the baked ravioli casserole from the oven and let it cool for a few minutes. Garnish with fresh parsley and red pepper flakes.
Optional Red Pepper Flakes, Optional Parsley Flakes
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