Onions Au Gratin

This cheesy onion side dish is a household favorite at Thanksgiving dinner.

• Cooking Time: 30 mins
• Total Time: 30 mins
• Calories: 228 Calories

Ingredients

• ¼ teaspoon salt
• ¼ cup butter
• 2 tablespoons all-purpose flour
• ½ cup heavy cream
• ½ cup grated Parmesan cheese
• ½ cup shredded Swiss cheese
• ½ cup beef broth
• ⅛ teaspoon pepper
• 6 yellow onions, halved and sliced 1/2 inch thick

Recipe Instructions

Step 1

Preheat the oven to 350 degrees F (175 degrees C). Grease an 8 inch square baking dish.

Step 2

Melt the butter in a large skillet over medium heat. Add onions; cook and stir until tender, about 5 minutes. Transfer to the prepared baking dish. In a medium bowl, stir together the beef broth and flour until smooth. Mix in the cream and season with salt and pepper; pour over the onions. Sprinkle Swiss cheese and Parmesan cheese over the top.

Step 3

Bake for 25 to 30 minutes in the preheated oven, until cheese is golden brown and the sauce is bubbly.