Easy to Make Taco Soup Beef and red kidney beans are high-protein foods that are ingredients in taco soup. One cup of taco soup contains a significant amount of calories. Forty-five of those calories are from fat Ingredients 1 tbsp. olive oil 1 large onion, chopped 2 lb. ground beef (or ground turkey) 1 15-oz. can pinto beans (optional-kidney beans) [...]