Directions

1. Place the navy beans into a large container and cover with several inches of cool water; let stand 8 hours to overnight. Or, bring the beans and water to a boil in a large pot over high heat. Once boiling, turn off the heat, cover, and let stand 1 hour. Drain and rinse before using.
2. Place the beans in a large saucepan with 4 cups of water. Bring to a boil over high heat, then reduce heat to medium-low, cover, and simmer 1 hour.
3. Preheat an oven to 375 degrees F (190 degrees C). Stir the ketchup, maple syrup, brown sugar, molasses, Worcestershire sauce, salt, pepper, and chili powder together in a small bowl; set aside.
4. Once the beans have simmered for 1 hour, drain, and reserve the cooking liquid. Pour the beans into a 1 1/2 quart casserole dish and stir in the chopped onion and the molasses sauce. Stir in enough of the reserved cooking liquid so the sauce covers the beans by 1/4 inch.
5. Cover, and bake in the preheated oven for 10 minutes, then reduce the heat to 200 degrees F (95 degrees C), and cook 6 hours longer. Stir the beans after they have cooked for 3 hours. Once the beans are tender and the sauce has reduced and is sticky, remove from the oven, stir, recover, and allow to stand 15 minutes before serving.

Recipe from Allrecipes.com

https://www.allrecipes.com/recipe/165249/baked-beans-from-scratch/