Add the browned ground venison, chopped onion, minced garlic, diced potatoes, frozen corn, mixed vegetables, drained and rinsed beans, diced tomatoes with their juices, tomato sauce, beef broth, and seasonings to the slow cooker.
1 small yellow onion, 2 cloves garlic, 1 russet potato, 1 cup frozen corn, 2 cups frozen mixed vegetables, 1 15-ounce can pinto beans, drained and rinsed, 1 15-ounce can black beans, drained and rinsed, 1 14.5-ounce can diced tomatoes, with juices, 1 8-ounce can tomato sauce, 5 –6 cups beef broth, 2 teaspoons chili powder, 2 teaspoons ground cumin, 1 teaspoon salt, 1 teaspoon black pepper