01 - Preheat oven to 400°F. Line a baking sheet with parchment paper or silicone mat.
02 - Remove outer leaves from cabbage. Cut off stem and carefully peel 8 whole leaves. Blanch in boiling salted water for 2–3 minutes until pliable. Drain and set aside.
03 - Heat 1 tbsp olive oil in skillet over medium heat. Sauté onion and garlic for 2–3 minutes until fragrant. Allow to cool slightly.
04 - In large bowl, combine ground beef, sautéed onion and garlic, egg, breadcrumbs, ketchup, Worcestershire sauce, salt, pepper, paprika, and cheddar cheese. Mix until just combined.
05 - Divide meat mixture into 4 portions. Form each into thick patty.
06 - Place two cabbage leaves overlapping on work surface. Set patty in center. Fold leaves around patty to encase; set seam-side down on baking sheet. Repeat with remaining patties.
07 - Brush tops of wrapped burgers with remaining olive oil.
08 - Bake for 30–35 minutes, or until meat is cooked through (internal temperature 160°F) and cabbage is lightly browned.
09 - Serve hot, optionally with mustard or favorite burger sauce.