Prep the cheese: Cut the cheddar into 6 even cubes. Pat them dry with a paper towel to help the meat seal around the cheese.
Mix the meat: In a large bowl, combine ground beef, egg, almond flour, Worcestershire sauce, salt, garlic powder, onion powder, smoked paprika, and black pepper. Mix gently with your hands until just combined. Don’t overwork the meat or the patties can get tough.
Form the patties: Divide the meat into 6 equal portions.
Flatten each portion into a thin disk, about 4 inches wide.
Stuff with cheddar: Place a cheddar cube in the center of each disk. Pull the meat up and around the cheese, sealing it completely. Flatten gently into a patty about 3/4 inch thick, making sure there are no cracks.
Pinch the edges well.
Chill briefly (optional but helpful): Place patties on a plate, cover, and chill for 10–15 minutes to help them hold their shape.
Heat your cooking surface: Preheat a skillet or grill over medium to medium-high heat. Grease with avocado oil or ghee.
Cook the patties: Place patties on the hot surface. Cook for 4–5 minutes per side, turning once, until the exterior is nicely browned and the internal temp reaches 160°F (71°C) for well-done beef and fully melted cheese.
Adjust heat if they brown too fast.
Rest and serve: Let the patties rest for 3–5 minutes. This keeps juices inside and prevents hot cheese from leaking out. Serve in lettuce wraps or over greens with your favorite keto-friendly toppings and sauces.