You could make the meatballs with all ground beef and omit the Italian sausage if you like. Add about 1/2 teaspoon dried Italian seasoning to the mix.
Freeze the meatballs by separating them into recipe-size portions and placing in freezer containers or resealable freezer plastic bags. Freeze for up to 2 months. To thaw, microwave on Defrost for 4 to 6 minutes or until thawed.