Preheat your oven to 350°F (175°C).
Drain and rinse the soaked beans.
In a large oven-safe pot, sauté the onion and garlic until translucent.
Add the beans, molasses, maple syrup, tomato paste, mustard powder, smoked paprika, salt, pepper, and water. Stir well.
Bring to a boil, then cover and transfer to the oven.
Bake for 1 hour, stirring occasionally.
Remove from oven and let cool slightly before serving.