Prep the patties. Take Bubba burger patties straight from the freezer — do not thaw. If using seasoning, spritz each side lightly with olive oil spray and sprinkle on the black pepper, garlic powder, and Montreal steak seasoning.
Arrange in the air fryer basket in a single layer with at least half an inch of space between each patty. Do not stack.
Air fry at 370°F for 13–15 minutes, flipping halfway through. For thinner smashed Bubba burgers, reduce to 8–10 minutes.
Check internal temperature with a meat thermometer: 160°F for beef varieties, 165°F for turkey, chicken, or veggie.
Add cheese (optional) during the final minute of cooking, or turn off the air fryer and let residual heat melt the cheese for 30–60 seconds with the basket closed.
Toast the buns in the air fryer at 350°F for 60 seconds while the burgers rest.
Assemble with lettuce, tomato, onion, pickles, and your favorite sauce. Serve immediately.