1. Brown beef and chopped onions in large skillet over medium-high heat until beef is no longer pink and onions are translucent.

2. Add taco seasoning and 1/2 cup of water to the skillet, mix well, and remove from heat. If using higher fat beef, drain excess grease before seasoning.

3. Spray the slow cooker with non-stick cooking spray.

4. Pour chili beans, tomato sauce, and Rotel into the slow cooker.

5. Add the browned beef mixture to the slow cooker and stir to combine.

6. Cover and cook on high for 3-4 hours or on low for 5-6 hours.

7. To serve, place a handful of Fritos in each bowl.

8. Optionally, add a layer of cooked rice over the Fritos.

9. Spoon the beefy taco mixture generously over the top.

10. Add desired taco toppings such as cheese, lettuce, tomato, jalapenos, sour cream, avocado, or hot sauce.

11. Finish with a squeeze of fresh lime juice and sprinkle of fresh cilantro if desired.