In the pressure cooker add beans, water, salt, and pepper, bring mixture to a boil. Dice 1 onion an add to mixture, add ground mustard and using a garlic press, crush the garlic and add into mix. Boil until bean are firm not fully cooked approx. 45 to 60 minutes. Decant off liquid retain 2 cups to use if needed while baking. Add ketchup, brown sugar, diced tomatoes, dice and add remain onion and the diced ham. Mix and pour into a Pyrex bowel. Place strips of bacon over bowel and bake in a 350? Oven for approx. 2 Hours