"I was going to attempt a chili recipe I got from a friend and discovered I had none of the ingredients. I already had my meats thawed and was set on chili for dinner, so I took what I had in my pantry and went with it. It's a big hit in my house now."
Heat olive oil in a skillet over medium heat; cook and stir onion and garlic in hot oil until tender, about 5 minutes. Stir ground beef and chorizo sausage into onion mixture; cook, breaking meat apart while stirring, until no longer pink, 10 to 15 minutes.
Mix ground beef-chorizo mixture, diced tomatoes, chili, butter beans, tomato sauce, chili powder, chipotle seasoning blend, salt, and black pepper in a slow cooker.
Cook on High until flavors have blended, 3 to 4 hours.