Created by KittenCal on January 15, 2012
Step 1: Grease a 13 x 9-inch baking dish (or any dish that will fit the peppers without over crowding). Cut off tops of green peppers and clean seeds out. Boil in large pot for 5 minutes, transfer to paper towels and place cut-side down to drain.
Step 2: In a skillet cook the ground beef with onion until browned; drain. Add in garlic and chili flakes and 2 cups of pasta sauce; bring to a simmer stirring until well combined, then simmer about 15 minutes. Remove from heat then mix in 2 cups of instant rice. Season with salt and pepper.
Step 3: Place the peppers into greased baking dish. Fill peppers with meat/rice mixture. Drizzle remaining 2 cups of spaghetti sauce evenly over all peppers. Sprinkle tops with Parmesan cheese (about 2 tablespoons on each pepper. Cover with aluminum foil and bake in a preheated 375 degree F oven for 25-30 minutes or until peppers are tender.
Step 4: Remove foil and sprinkle with shredded mozzarella cheese. Bake uncovered for another 10 minutes or until cheese is melted and bubbly.