Preheat your oven to 425℉. Line a sheet pan with parchment paper.
In a large bowl, combine the sausage meat, ground turkey, ricotta, Parmesan cheese, parsley, salt, and pepper. Using clean hands, mix thoroughly until all ingredients are evenly incorporated.Divide the mixture into 24 equal portions. Shape each portion into a ball slightly larger than a golf ball.Arrange the meatballs evenly on a sheet pan, ensuring space between each one.Lightly coat the meatballs with cooking spray to help them brown evenly during cooking. Roast the meatballs until firm to the touch and lightly browned, about 20-25 minutes. You can always crack one open to make sure it's cooked through, if you need some reassurance!
Serve the meatballs topped with warm marinara sauce (you can also warm your tomato sauce in a pot, add the meatballs, and keep warm over low heat until you're ready to eat).