This hearty slow cooker cowboy casserole combines ground Italian sausage, tender potatoes, colorful bell peppers, kidney beans, corn, and fire-roasted tomatoes, all seasoned with garlic and chili powder, and topped with melted Colby Jack cheese. It's an easy and flavorful one-pot meal perfect for a comforting dinner.
For best flavor, ensure the sausage is well browned and caramelized before adding it to the slow cooker. Don't forget to adjust seasonings to your taste after cooking. Serve with fresh cilantro and a dollop of sour cream for an extra touch of freshness and creaminess.