Step 1

Heat the oil in a large pan over medium high heat.

Step 2

Place the ground beef in the pan and season with salt and pepper to taste. Cook for 6-8 minutes, breaking up the meat with a spatula.

Step 3

Add the onion and cook for an addition 4-5 minutes.

Step 4

Place the beef and onion mixture in the slow cooker along with the tomato sauce, ketchup, brown sugar, Worcestershire sauce, garlic powder, 1/2 teaspoon salt and 1/4 teaspoon pepper.

Step 5

Stir to combine the ingredients.

Step 6

Cook on HIGH for 3 hours or LOW for 6 hours.

Step 7

Spoon the meat onto the hamburger buns then serve.