Aunt Marilyn's Baked Beans

2 cups navy beans
1/4 cup mild molasses
3 Tbsp brown sugar
2 Tbsp ketchup
1 tsp salt
1/2 tsp prepared mustard
Pinch black pepper
1 medium Harvest Haven onion, sliced
Boiling water or hot bean liquid

Soak beans overnight in 6 cups cold water.

Simmer beans in water for 1½ to 2 hours or until tender. Drain, saving liquid.
Put onion slices in bottom of bean pot or roaster. Add beans.

Combine seasonings with 1½ cup hot bean liquid or water; pour over beans, adding more water to cover them.

Bake beans very slowly (250° F) for 5 to 7 hours. Remove cover during last 1/2 hour to brown beans.

Add boiling water as required during baking to keep beans covered with liquid.