Make It
Step 1
Place oil, beef, bell pepper, onion and bouillon in a large skillet; cook over medium-high heat, stirring frequently, for 8 to 10 minutes or until beef is no longer pink and vegetables are tender. Add pinto beans, black beans, diced tomatoes and water; mix well.
Step 2
Spread 1 ½ cups beef mixture onto bottom of 5-quart slow cooker. Top with 1 tortilla and 2/3 cup cheese. Repeat layers 4 times, ending with remaining 1/3 cup cheese.
Step 3
Cook on low for 5 hours.