Preheat the oven to 350 degrees F.
In a small bowl, stir together the oats and milk. Thinly slice 1/4 of the onion and set aside. Finely chop
the remaining onion. In a large bowl combine the turkey
, oat mixture, chopped onion, bell pepper, eggs
, Worcestershire sauce
, ketchup, salt and a few grinds of pepper. Mix just until well combined.
Transfer the mixture to a 9 by 13-inch baking dish
and shape into a loaf about 5 inches wide and 2 1/2 inches high. Pour the tomato sauce over the meatloaf
and sprinkle with the sliced onions
. Bake for about 1 hour or until an instant-read thermometer registers 160 degrees.F.
Remove from the oven and let rest for 10 to15 minutes before slicing.