Grandma's BBQ Hamburgers (aka Sloppy Joes)

Growing up my grandma would make her BBQ hamburgers for us every Labor Day.  In the town I grew up in there was a parade in the morning on Labor Day.  After the parade we would make our way to grandma's house and have lunch.  Every year it was the same, Grandma's BBQ Hamburgers, and I looked forward to it every year.  After filling our bellies we would head to the fair, and more often than not, empty our bellies on the rides. :)

Grandma passed away in 2000 and the only thing I asked for of hers was this recipe.  It's now my sweet little 5 year old's favorite meal.  Well, besides macaroni and cheese.

1 pound ground beef
1 cup onion, diced
1 1/2 tablespoons mustard
1 tablespoon vinegar
2 tablespoons flour
2 tablespoons brown sugar
1/2 tablespoon Worcestershire sauce
1/2 cup tomato sauce
1/4 cup ketchup
Salt and pepper, to taste

Brown beef and onion in a skillet over medium heat.  Once cooked, pour into a slow cooker and add remaining ingredients.  Stir until well combined and cook on low for 3-4 hours.

Recipe from Grandma Leta.

Linked on Pinworthy Projects, The Weekend re-Treat