The spicy flavor of Cajun seasoning brings out the robust flavor of the beef in these burgers. Serve them at a cookout with a variety of toppers.
In bowl, mix beef, Cajun seasoning, and salt. Divide into 12 portions. Shape into 3- to 4-inch-wide patties.
In bowl, mix onion, pepper, and cheese. Spoon 1/4 cup of cheese mixture into the centers of 6 patties. Top with remaining patties. Press edges to seal.
Grill directly over medium heat*, uncovered, 14 to 18 minutes or until an instant-read thermometer inserted in the center of burgers registers 160 degrees F., turning over halfway through grilling time. Serve on buns. Add your choice of accompaniments such as lettuce, sliced tomatoes, cucumber slices, pickles, and carrot, and celery sticks, if you like. Makes 6 burgers.
For medium heat, you should be able to hold your hand over heat at the height of food for 4 seconds.