Slow Cooker Chicken Taco Soup

INGREDIENTS

onion, chopped

1 16 ounce can

chili beans

1 15 ounce can

black beans

1 15 ounce can

whole kernel corn, drained

1 8 ounce can

tomato sauce

1 12 fluid_ounce can

or bottle beer

2 10 ounce cans

diced tomatoes with green chilies, undrained

1 1.25 ounce package

taco seasoning

whole skinless, boneless chicken breasts

1 8 ounce package

shredded Cheddar cheese (optional)

sour cream (optional)

crushed tortilla chips (optional)