Onions Au Gratin
Onions Au Gratin offers tender, caramelized onions topped with a rich, cheesy sauce. The combination of Swiss and Parmesan cheeses creates a savory, golden crust perfect for cozy dinners or elegant gatherings. This comforting dish pairs well with roasted meats or as a standalone vegetarian delight.
Ingredients
Instructions
- Slice the onions into 1/2-inch thick rings.
- Sauté the onions in butter until tender.
- Place the sautéed onions into a greased 8-inch square baking dish.
- In a bowl, stir the beef broth, whipping cream, flour, and pepper until smooth.
- Pour the mixture over the onions in the baking dish.
- Sprinkle the shredded Swiss cheese and grated Parmesan cheese over the top.
- Bake uncovered at 350°F for approximately 30 minutes or until the cheese is golden brown and the mixture is bubbly.
Nutrition & Diet Analysis (per serving)
Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.
* % Daily Values based on a 2,000 calorie diet (FDA 2020).
Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).