½ cup crushed tortilla chips, or to taste(Optional)
¼ cup chopped green onions, or to taste
Combine three-bean mix, black beans, pinto beans, corn, tomatoes, tomato sauce, onion, green chile peppers, green bell pepper, taco seasoning, and garlic in a slow cooker. Add beer and give mixture a good stir.
Cook on Low until flavors combine, 5 to 9 hours. Serve topped with crushed tortilla chips and green onions.
You can dice the onion, green pepper, and garlic the night before to save time.
Substitute vegetable broth for the beer if preferred.