Caramelized Onion Cauliflower Steaks with Gorgonzola

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Thick cauliflower slices roasted until golden, topped with sweet caramelized onions and creamy Gorgonzola for a luxurious vegetarian keto dish. This italian-inspired keto ready in about 50 minutes pairs medium, thinly sliced yellow onions, tablespoons unsalted butter, crumbled Gorgonzola cheese for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 280 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 20 min Cook: 30 min Serves 4 Italian cuisine 280 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F (200°C). Toss 1-inch cauliflower slices with 1 tablespoon olive oil, 1/2 teaspoon salt, and 1/4 teaspoon black pepper on a baking sheet.
  2. Step 2: Roast for 20 minutes until edges are golden and tender.
  3. Step 3: Melt 2 tablespoons unsalted butter in a skillet over medium heat. Add 2 thinly sliced yellow onions and cook for 15 minutes, stirring occasionally, until deeply caramelized and golden.
  4. Step 4: Stir in 1 tablespoon balsamic vinegar and 1/2 teaspoon dried thyme, cooking for 1 minute until sauce thickens.
  5. Step 5: Remove cauliflower from oven, top with caramelized onions and 1/4 cup crumbled Gorgonzola. Return to oven for 5 minutes until cheese melts.

Equipment for this recipe

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Frequently asked questions

How long does Caramelized Onion Cauliflower Steaks with Gorgonzola take to make?

Total time is about 50 minutes (20 min prep + 30 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Caramelized Onion Cauliflower Steaks with Gorgonzola?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep tablespoons unsalted butter from drying out.

Can I substitute ingredients in Caramelized Onion Cauliflower Steaks with Gorgonzola?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Caramelized Onion Cauliflower Steaks with Gorgonzola for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Caramelized Onion Cauliflower Steaks with Gorgonzola?

Italian keto like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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