Brown the ground beef in large frying pan (season with salt and pepper), drain fat if needed.

In a separate frying pan, cook the bacon till crispy.

Chop or crumble bacon, reserving 4 crumbled slices for the topping.

Drain the beans.

Finely chop the yellow onion.

Add beans to cooked ground beef. Gently stir in ketchup, chopped onion, chopped bacon, and brown sugar.

Put mixture into large oven proof casserole.

Top with reserved brown sugar and chopped bacon.

Cover with foil.

Place casserole dish onto foil lined rimmed baking sheet (you do not want this to over flow onto the bottom of your oven).

Bake at 350• for 45 minutes, then reduce heat to 200* and cook for another 2 hours.