Preheat oven to 375°F.
Heat olive oil in a skillet over medium heat.
Add ground beef, salt, black pepper, garlic powder, and Italian seasoning.
Cook beef until browned, breaking it apart with a spatula.
Continue cooking until no pink remains.
Drain excess grease from the skillet.
Return skillet to medium heat.
Pour low-carb tomato sauce into the beef and stir until coated.
Simmer 2 minutes.
In a bowl, combine ricotta, softened cream cheese, grated parmesan, and egg.
Stir until mixture is smooth.
Spoon ground beef mixture into a small baking dish and spread evenly.
Spread ricotta mixture over the beef in an even layer.
Sprinkle shredded mozzarella across the top.
Place baking dish uncovered into the oven.
Bake 18 to 20 minutes or until cheese melts and lightly browns.
Remove from oven and let stand 3 to 5 minutes before serving.