Meatball zucchini boat

https://pin.it/513nj0DgV Meatball Zucchini Boats 15 ingredients Meat • 1 lb Ground beef Produce • 2 Garlic cloves • 1/2 tsp Garlic powder • 1/4 cup Parsley • 3 Zucchini, medium Refrigerated • 1 Egg, large Condiments • 2 cup Marinara sauce Baking & Spices • 1 Black pepper, Freshly ground • 1/2 tsp Italian seasoning • 1 Kosher salt • 1/2 tsp Red pepper flakes Oils & Vinegars • 1 tbsp Olive oil, extra-virgin • 1 tbsp Vegetable oil Dairy • 1 cup Mozzarella • 1/2 cup Parmesan