Heat a large pan over medium heat and saute onion and garlic until soft with olive oil. Add the ground beef and cook until browned. Stir in the tomatoes and ½ of the basil. Let simmer for 5 minutes and season with salt and pepper.
Preheat oven to 375 degrees F.
In a large bowl, mix the ricotta cheese, parmesan cheese, egg and the remaining basil. Season with salt and pepper.
On a working surface, arrange 3 to 4 strips of zucchini overlapping them then arrange more on top to form a "+" shape. Scoop about 2 tablespoons of the ricotta mixture then fold the zucchini on all sides. Scoop some meat sauce to cover a 9 x 13 inch baking pan. Arrange the ravioli then scoop the remaining sauce and ending with mozzarella cheese on top. Bake for about 30 minutes until bubbly. Serve
Recipe by The Gluten Free at https://www.theglutenfree.com/gluten-free-zucchini-ravioli-with-meat-sauce/