Dice the onion and green pepper into bite-sized pieces, and mince the garlic. Place them all in the slow cooker.
4 cloves garlic, 1 small onion, 1 bell pepper
Drain and rinse 2 15.5 oz. cans of light or dark kidney beans and 1 15.5 oz. can of pinto beans and add them to the slow cooker.
31 oz kidney beans, 15.5 oz pinto beans
Add the canned tomatoes, corn, broth, and all seasonings to the slow cooker, and stir well to combine.
28 oz diced tomatoes, 8 oz tomato sauce, 2 Tbsp. sugar, 2 tsp. chili powder, 1 tsp. smoked paprika, 1 ½ tsp. cumin, 1 tsp. Italian seasoning, 3 cups vegetable broth, 2 cups frozen corn
Place the cover on the slow cooker and cook for 4-5 hours on 'High' or 7-8 hours on 'Low'.
When the chili has finished cooking thicken it using a slurry of corn starch and water. Stir 2 Tbsp. corn starch into ½ cup of water. Slowly pour the slurry into the chili until it has thickened to the consistency you want.
½ cup water, 2 Tbsp. corn starch