Preheat the oven to 350 degrees F.
In a large saute pan or dutch oven (by using a dutch oven you won’t have to transfer the recipe to a casserole dish), heat olive oil on medium-low heat. Add in onions and cook on medium-low for 20-25 minutes, stirring occasionally, until the onions are translucent and slightly caramelized.
Add in garlic and whiskey. Cook for 30 seconds, or until the pan is deglazed and most of the liquid is burned off.
Add in tomato paste, soy sauce, mustard and apple cider vinegar. Cook for 1-2 minutes on medium-low, or until the tomato paste has thinned out.
Add in the vegetable broth, smoked paprika, chili powder, liquid smoke, maple syrup and beans. Stir everything together until the beans are well coated.
Cover the beans and bake for 40-45 minutes. Uncover the beans and bake for an additional 10 minutes. Allow to cool for a few minutes and enjoy!