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 cabbage leaves in boiling salted water for 2-3 minutes until pliable. Drain and set aside.
03 - In a skillet, heat 1 tbsp olive oil over medium heat. Sauté onion and garlic for 2-3 minutes until fragrant. Allow to cool slightly.
04 - In a 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 the meat mixture into 4 portions. Form each into a thick patty.
06 - Place two cabbage leaves overlapping on your work surface. Set a patty in the center. Fold the leaves around the patty to encase; set seam-side down on the baking sheet. Repeat with remaining patties.
07 - Brush tops of wrapped burgers with remaining olive oil.
08 - Bake for 30-35 minutes, or until the meat is cooked through (internal temperature reaches 160°F) and cabbage is lightly browned.
09 - Serve hot, optionally with mustard or your favorite burger sauce.