Preheat oven to 350°F. Grease or spray with cooking spray a 9 x 13 or similar size baking pan.
In a large skillet over medium-high heat, brown ground beef, breaking into crumbles with spoon. Drain fat as needed. To the pan, add the garlic, Italian seasoning, onion powder, marinara sauce and 1 TBSP basil. Stir to combine. Reduce heat to medium and continue to cook 5 minutes until heated thru and flavors are blended.
Spread 1/3 of meat mixture in the bottom of your baking pan. Top with 1/2 of the raviolis, laying out in a single layer. Top with another 1/3 of the meat mixture and one-half each of the mozzarella and parmesan cheeses. Repeat the layers of ravioli, then meat sauce, ending with the cheeses.
Cover your pan with foil and bake on the center rack of the oven for 30 minutes. Remove the foil and bake for 10 minutes more until casserole is bubbling around the edges. Garnish with remaining basil and serve warm.