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Asiago Creamy Baked Onions Recipe

Asiago Creamy Baked Onions Recipe


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4.5 from 38 reviews

  • Total Time: 55 minutes
  • Yield: 4 1x

Description

Savory Asiago Creamy Baked Onions bring elegant comfort to your dinner table, melding rich cheese with caramelized sweetness. Creamy layers of asiago and tender onions promise a luxurious side dish that satisfies deeply and delights completely.


Ingredients

Scale

Main Ingredients:

  • 4 large yellow onions, peeled and sliced into 1/4-inch rounds
  • 1 cup heavy cream
  • 1/2 cup Asiago cheese, grated

Herbs and Seasonings:

  • 1/2 teaspoon fresh thyme, chopped
  • Salt, to taste
  • Black pepper, to taste

Finishing Ingredient:

  • Olive oil, for drizzling
  • 2 teaspoons Dijon mustard

Instructions

  1. Preheat oven to 450F (230C) and prepare a baking dish by lightly greasing its surface.
  2. Arrange onion slices in a uniform, single layer across the bottom of the prepared dish.
  3. Drizzle olive oil over the onion slices and sprinkle chopped thyme, salt, and pepper for seasoning.
  4. Roast onions for 20 minutes until they transform into soft, golden-edged caramelized rounds.
  5. Meanwhile, warm heavy cream in a saucepan over medium heat until it reaches a gentle simmer.
  6. Incorporate Dijon mustard into the cream, stirring consistently to create a smooth base.
  7. Blend half of the grated Asiago cheese into the cream sauce, allowing it to melt completely and create a rich, velvety texture.
  8. Remove roasted onions from the oven and carefully pour the creamy Asiago mixture evenly across the surface.
  9. Sprinkle remaining Asiago cheese over the top to create a golden, melting layer.
  10. Cover the baking dish with aluminum foil and return to the oven for an additional 20 minutes.
  11. Verify doneness by ensuring onions are tender, cheese is fully melted, and sauce bubbles around the edges.

Notes

  • Select sweet onions like Vidalia for a milder, more delicate flavor that caramelizes beautifully and reduces potential sharpness.
  • Slice onions uniformly to ensure even cooking and consistent texture throughout the dish, using a sharp knife for clean, precise cuts.
  • Adjust cream sauce thickness by adding more cheese or reducing cream slightly, creating a personalized consistency that suits individual preferences.
  • Transform this side dish into a vegetarian main course by adding roasted garlic, fresh herbs like rosemary, or incorporating vegetable broth for extra depth.
  • Prep Time: 15 minutes
  • Cook Time: 40 minutes
  • Category: Appetizer, Dinner
  • Method: Baking
  • Cuisine: Italian

Nutrition

  • Serving Size: 4
  • Calories: 311 kcal
  • Sugar: 6 g
  • Sodium: 350 mg
  • Fat: 26 g
  • Saturated Fat: 15 g
  • Unsaturated Fat: 9 g
  • Trans Fat: 0.3 g
  • Carbohydrates: 13 g
  • Fiber: 2 g
  • Protein: 10 g
  • Cholesterol: 85 mg