Preheat oven to 350 degrees.
Cook egg noodles as directed on package.
While the noodles are cooking, in a large skillet brown your ground beef with your onion and bell pepper. Then drain.
Return to skillet and add tomato sauce and ketchup. Mix well.
Cover and simmer for 5 minutes.
Layer noodles, meat and cheese in 1 1/2 quart casserole dish (8x8). Then add second layer, ending with cheese.
Cover with foil and bake at 350 degrees for 40 minutes. Can top with extra cheese, if desired.