Pre-heat the oven to 350° F, and grease a 9x13 baking dish with cooking spray.
Add all of the ingredients, including the ground beef, eggs, minced onion, ketchup, bbq sauce, oatmeal, and seasoned salt, to a large bowl. Mix well using a large fork; or you can just use your hands.
Transfer the meat mixture to the greased 9x13 baking dish, and shape it into a loaf.
Squirt ketchup all over the top of the meatloaf.
Bake the meatloaf at 350° F for about 1 hour, or longer if needed, until the internal temperature reaches 160° F. I definitely recommend a meat thermometer, to make sure the meat has come to temp and is fully cooked.
When it’s fully cooked, remove the meatloaf from the oven; slice it and serve with your favorite sides.