Carefully remove the tough core from the cabbage using a sharp knife. Slice the cabbage half into 4 thin wedges. Halve each wedge, leaving you with 8 "chunks."
Lay a large piece of heavy-duty foil on a baking sheet and spray with nonstick spray. Spread the cabbage out in the center, and top with onion. Add butter in four evenly spaced dollops over the onion. Sprinkle with salt, pepper, and paprika. Top with bacon and garlic.
Place another large piece of foil over the veggies. Fold together and seal all four edges of the two foil pieces, forming a well-sealed packet.
Place the baking sheet in the oven and bake for 30 to 35 minutes, until the veggies are soft.
Let it cool slightly. Using oven mitts, carefully flip the packet over, allowing the butter mixture to coat the veggies, and then return to right-side-up. Cut the packet to release steam before opening it entirely. (Careful - steam will be hot.) If you like, season with additional salt, pepper, and paprika, to taste. Mmmmm!