- 1 (8 ounce) flat iron steak
- salt and ground black pepper to taste
- 3/4 cup cola-flavored carbonated beverage
- 1/2 cup ketchup
- 1/4 cup Worcestershire sauce
- 2 cloves garlic, minced
- 1/2 teaspoon chili powder
- 1/2 teaspoon salt
- 1/2 teaspoon dry mustard
- 1/4 teaspoon ground cayenne pepper
- Place steak into a casserole dish and season with salt and black pepper.
- Whisk cola-flavored beverage, ketchup, Worcestershire sauce, garlic, chili powder, salt, mustard, and cayenne pepper together in a bowl; pour over steak.
- Marinate steak in the refrigerator, at least 1 hour to overnight.