Cook ground beef with sausage and chopped onion, breaking meat into small pieces.

Drain grease.

Place cooked meat and onion in a large baking dish.

Wipe out pan.

Cook chopped bacon until crisp.

Drain bacon grease.

Crumble or chop bacon into smaller pieces.

Add bacon and remaining ingredients (brown sugar, Dijon mustard, Worcestershire sauce, pepper, ketchup, kidney beans, great northern beans, Bush's baked beans, and water) to the baking dish.

Stir to combine.

Bake at 300 degrees F (150 degrees C), covered, for 2 hours, stirring occasionally and adding water if beans appear too dry.

Remove cover for the last 15 minutes of baking.