Mix the ground beef, vegetables, and cheeses. You'll need to knead them in with your hands.
Beat the egg and 1 teaspoon of the tomato sauce.
Blend in to the meat mixture. The mixture will be a little wet but should hold its shape.
Shape into a small loaf.
Brush with remaining tomato sauce.
Place on a piece of parchment and add to the air fryer basket. Cook for 8 minutes. Check the internal temperature with an instaread thermometer. Cook until it's 160F in the center.
Let rest for 5 minutes. The internal temperature will continue to rise.
In the Oven
Follow instructions above but bake at 350F for about 20 minutes.
Expert Tip: 85/15 ground beef works best. There's enough fat to carry the flavor but not so much that the air fryer is a pain to clean up.
You can use ground turkey as well.
Line the bottom of the air fryer with foil for easy clean up - there will be grease!
Increase the serving size to 4 and make 4 meatloaves. Bake one tonight and package the other 4 in individual freezer bags. Freeze until the day of serving then just remove from the freezer and let thaw all day in the refrigerator until you're ready to cook.
Use parchment or aluminum foil over the rack to keep the meat loaf from falling through. Poke small holes in the paper to allow the grease to drain off.
Check with a instaread thermometer after 8 minutes - air fryers may vary in how quickly they cook the meatloaf.
Cook until the internal temperature is 160F then let it rest for 5 minutes. During that time the internal temperature will rise to 165F.
If the top is getting too dark just cover with some aluminum foil.