Heat 1 tablespoon of olive oil in a skillet. Add the sausage and beef and cook, occasionally stirring and breaking up the meat into crumbles, until no longer pink, 7 to 10 minutes. Drain and set aside.
In a large saucepan, heat 1/2 tablespoon of olive oil. Add the garlic and heat until it becomes fragrant, but not browned, about 1 minute. Add the marinara sauce, meats, and herb(s). Simmer over medium-low heat, stirring occasionally, 7 to 10 minutes.
Meanwhile, in a small bowl, stir together the ricotta and Parmesan cheese.
Pour half of the sauce mixture into a baking dish. You may use an 8 x 8-inch baking dish or a pie dish. Spread the ricotta on top of the sauce. Top with 1 cup of the mozzarella cheese. Top with the rest of the sauce mixture and finish with the rest of the mozzarella.
Bake uncovered 12 to 15 minutes until the edges are very bubbly and the top browns. If you like, broil for the last 2 to 3 minutes to ensure the top browns.
Serve warm with bread sticks or dippers of your choice.