Heat the olive oil and butter in a Dutch oven or heavy-bottomed pot over medium heat
Add the Street Taco Barbacoa seasoning to the oil and butter and cook for about 2 minutes, stirring frequently, to bloom the spices
Add the chopped onion and diced jalapeño and cook, stirring occasionally, until the veggies are cooked down, about 8-10 minutes
Add the rinsed and drained beans to the pot and stir to combine
Add the water and chicken bouillon cube and stir well to dissolve the bouillon
Bring to a simmer, then reduce heat to low and let simmer uncovered for 30 minutes, stirring occasionally
Using a potato masher, mash some of the beans directly in the pot to thicken the mixture and create a creamier texture, leaving some beans whole for texture
Taste and season with salt and pepper as needed
