Heat 2 tablespoons of unsalted butter and 1 tablespoon of olive oil in a skillet over medium-high heat. Add cabbage wedges and sear for 3-4 minutes on each side until golden brown.

In the same skillet, lower the heat and add 1 chopped yellow onion. Sauté for 5 minutes until soft, then stir in 3 minced garlic cloves and 1 teaspoon of Cajun seasoning; cook for 1 minute until fragrant.

Add 1 cup of heavy cream and scrape up any brown bits. Simmer for 2-3 minutes until thick, then stir in 1 cup of freshly grated Parmesan cheese and chopped parsley, simmer for another minute until cheese melts.

Return the seared cabbage to the skillet, spoon the sauce over, and cover partially. Cook for an additional 5 minutes on medium heat until the cabbage is fork-tender.

Remove from heat and garnish with fresh parsley. Serve warm as a side dish or vegetarian option.