In a large saucepan or pot, combine ground beef, sausage, onion, salt and garlic powder. Cook on medium-high heat until browned, crumbled and cooked through. Drain off any excess fat. Add marinara sauce, tomato sauce, and Italian seasoning. Stir to combine. Simmer for 15 minutes, stirring occasionally. Remove from heat and allow to cool.
Meanwhile, in a medium size bowl combine the ricotta, Parmesan cheese, and parsley. Stir to combine.
Lightly spray pans with cooking spray. For each pan of lasagna, spread a little sauce into the bottom of each pan. Top with a layer of 2 lasagna noodles. Spoon more sauce over the noodles. Top with dollops of the ricotta cheese mixture. Sprinkle with mozzarella cheese. Repeat.
Bake (thawed) lasagna, covered in foil, on 350 degrees for about 45 minutes. Remove the foil and continue baking an additional 15 minutes. Enjoy!
Recipe by About A Mom at https://www.aboutamom.com/lasagna-freezer-meal-recipe/