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Roasted Parmesan Creamed Onions

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Roasted Parmesan creamed onions are a comforting, elegant side dish featuring caramelized onions baked in a rich, garlicky Parmesan cream sauce until golden and bubbly.

  • Author: Ella
  • Prep Time: 10 minutes
  • Cook Time: 50–55 minutes
  • Total Time: 1 hour
  • Yield: 4–6 servings
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

  • 6–8 small to medium yellow or white onions, peeled and halved
  • 2 tbsp olive oil or melted butter
  • 1 tsp salt
  • 1/2 tsp black pepper
  • 1 cup heavy cream
  • 2 cloves garlic, minced or grated
  • 1 tsp fresh thyme or rosemary (optional)
  • 3/4 cup grated Parmesan cheese
  • Optional: 1/4 cup breadcrumbs or extra Parmesan for topping

Instructions

  1. Preheat oven to 375°F (190°C) and grease a medium-sized baking dish.
  2. Peel onions, slice in half from root to tip, and trim ends slightly.
  3. Place onions cut-side down in the dish, drizzle with olive oil or melted butter, and season with salt and pepper.
  4. Roast uncovered for 30–35 minutes, until soft and beginning to caramelize.
  5. Meanwhile, heat heavy cream in a saucepan with garlic, herbs (if using), salt, and pepper. Simmer gently for 2–3 minutes, then stir in Parmesan until melted and slightly thickened.
  6. Pour cream sauce over roasted onions. Top with extra Parmesan or breadcrumbs if desired.
  7. Return to oven and bake another 15–20 minutes, until bubbly and golden brown.
  8. Let rest for a few minutes before serving to allow sauce to set.

Notes

  • Add a splash of white wine to cream sauce for depth.
  • Try Gruyère instead of Parmesan for variation.
  • Broil for 2–3 minutes at the end for a crisp topping.
  • Use pre-cooked pearl onions for a shortcut version.
  • Add Dijon mustard for a tangy twist.

Nutrition

Find it online: https://elladishes.com/roasted-parmesan-creamed-onions/