Super Easy Crock-Pot Taco Soup

SUPER EASY CROCKPOT TACO SOUP1 yellow onion, diced2 T. olive oil2 T. minced garlic1 (28-oz.) can corn, drained1 (28-oz.) can black beans, drained and rinsed1 (28-oz.) can Rotel or diced tomatoes3 c. water1 packet dried Ranch dressing seasoningSalt/black pepper to…