These sandwiches are great for meal preps. If you’re planning to take these to work for lunch, or have them as leftovers, then I recommend stopping at step 4, and packing the sauce and meat separate from the bread and cheese. To reheat, pop the breads into a toaster for just a minute, or microwave for about 8-10 seconds, just to slightly warm. Then heat up the meatballs and sauce for one minute, and continue on steps 6-8. And voila!!