Slow-Cooker Cowboy Chili

• 3 lbs lean hamburger
• 1 tablespoon olive oil
• 12 serrano peppers (or to taste)
• 1 (28 ounce) can crushed tomatoes
• 3 large garlic cloves, minced
• 1/4 cup chili powder (adjust according to your tolerance for heat)
• 1 (6 ounce) can tomato paste
• 1 cup chicken stock
• 2 (4 ounce) cans diced green chilies (adjust according to taste)
• 1 tablespoon cumin
• 2 teaspoons cayenne pepper
• 1 (28 ounce) can pinto beans
• 1 tablespoon apple cider vinegar
• 2 finely chopped onions

1. In a large skillet, brown the beef and drain.
2. Place the beef in the crockpot and add all the ingredients except the onions.
3. Cover and cook on low for 6 hours.
4. Add the onions and cook on low for an additional 2 hours.

lean hamburger, olive oil, serrano peppers, tomatoes, garlic, chili powder, tomato paste, chicken stock, green chilies, cumin, cayenne pepper, pinto beans, apple cider vinegar, onions

Taken from www.food.com/recipe/slow-cooker-cowboy-chili-222756 (may not work)