- 1 tablespoon peanut oil
- 3 pounds country-style pork ribs
- 1 (15 ounce) can tomato sauce
- 1 tablespoon dried minced onion, or more to taste
- 1/3 cup hoisin sauce
- 3 shiitake mushrooms, sliced
- Heat the peanut oil in a large skillet over high heat. Brown the ribs evenly in the hot oil, about 5 minutes; remove from heat.
- Stir the tomato sauce, dried onion, hoisin sauce, and shiitake mushrooms together in a slow cooker. Add the ribs to the sauce mixture, turning to coat in the sauce.
- Cook on Low until the ribs are falling-apart tender, 8 to 10 hours.