Another share from Jennie at With Six You Get Eggroll - THANKS 
Green Peppers
Ground Beef
Chopped Onions
Tomato Sauce
Cooked Rice
Green Peppers
Shredded Cheese
Wash  peppers and cut them in half length wise and strip the inside. They'll  stand up better when cut that way. Start cooking the rice. Boil some  water and dip each pepper half into the boiling water with tongs for  just a minute. Brown the ground beef with the onions. Add tomato sauce.  And, what the heck, add a dash or two of garlic powder! Mix the rice in  to beef mix. Put mix into each pepper half. Sprinkle with cheese. Put  them in a baking dish prepared with cooking spray. Place them in an oven  warmed to 350 for just a few minutes (5-7) until cheese is melted. 
The  peppers make an awesome bowl and flavor the meat and rice mixture. We  had this a lot growing up and I have fond memories. After assuring my  kids that they didn't have to eat the pepper, they ate the rice. It was  yummy!
