In a large skillet over medium heat, add oil.
Once hot, add sofrito and sauté for about 2 minutes or until fragrant.
Add ham and stir fry until it starts to caramelize.
Stir in tomato sauce, beans, chicken stock, and sazon seasoning.
Add potatoes and season with oregano and adobo seasoning.
Bring to a boil, then reduce heat (to the LOWEST setting) and simmer for 25-30 minutes. The potatoes should be tender and completely cooked through.
Season with salt and pepper if needed. Serve warm over rice and enjoy!