Oven & Pan Preparation : Position a rack in the center of your oven and preheat to 400°F (205°C). Line the rimmed baking sheet with parchment paper to prevent sticking and simplify cleanup.
Create the Herb Paste : In the small mixing bowl, whisk together the avocado oil, sea salt, garlic powder, dried oregano, black pepper, and optional red pepper flakes until a cohesive, savory paste is formed.
Fashion the Cabbage Steaks : Trim the stem end of the cabbage just enough to create a flat, stable base. Slice the entire head of cabbage vertically into four uniform, 1-inch (2.5 cm) thick steaks.
Season Generously : Arrange the four cabbage steaks in a single layer on the prepared baking sheet. Using the pastry brush, thoroughly coat both sides of each steak with the herb paste, making sure to work it into the layers where possible.
High-Heat Roasting : Place the baking sheet into the fully preheated oven. Roast for 25–35 minutes, carefully flipping the steaks once at the halfway point to ensure even browning.
Final Tenderness Check : The dish is complete when the cabbage steaks are deeply golden-brown at the edges and the thickest part of the core can be effortlessly pierced with the tip of a knife.
Rest & Serve : Allow the roasted cabbage to rest for a minute before serving. Present with fresh lemon wedges on the side for squeezing over top.
