Follow these simple steps to create your Slow Cooker 4-Ingredient Slumgullion:

1. Brown the Meat: In a skillet, brown the ground beef (or turkey) over medium heat. Drain any excess fat.
2. Add Ingredients to Slow Cooker: Transfer the browned meat to the slow cooker. Add the frozen mixed vegetables, diced tomatoes (with juice), and uncooked elbow macaroni.
3. Mix Well: Stir all the ingredients together until well combined.
4. Add Liquid: If desired, add 1-2 cups of water or beef broth to achieve your preferred consistency.
5. Set Slow Cooker: Cover and cook on low for 6-8 hours or on high for 3-4 hours.
6. Check for Doneness: About 30 minutes before serving, check the macaroni for doneness. If needed, add more liquid and stir.
7. Serve: Once cooked, stir well and serve hot.

This straightforward process ensures that you’ll have a hearty meal without the hassle.