Preheat oven to 350 degrees.
In a large bowl combine the ground beef, oats, egg, mushrooms, worcestershire sauce, tomato paste and ketchup and mix together.
Dice up the bell pepper and onion, add them to the bowl and mix.
Add Italian seasoning, salt and pepper to taste to bowl and mix.
Oil a loaf pan or a large dish and transfer the mixture to it.
Cook for 30 minutes.
Remove meatloaf from oven and top meatloaf with ketchup to your liking (approximately 6 oz.
Put the meatloaf back in the oven and cook for another 15 minutes. Then enjoy!
