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–+ servings
Plate of cheesy onion casserole with softened rings of onions and buttery cracker topping, ready to eat.

Cheesy Onion Casserole

Sweet onions are the star of the show with this cheesy onion casserole. As the onions bake, they get soft and mild, making them the perfect base for herbs, cheese, and a buttery cracker topping.
Prep Time10 minutes
Cook Time1 hour 5 minutes
Total Time1 hour 15 minutes
Servings: 12 Servings
Author: Carlee

Ingredients

  • 3 lb. sweet onions
  • 1 teaspoon garlic salt
  • ½ teaspoon mustard powder
  • ½ teaspoon dried thyme
  • ½ teaspoon paprika
  • ¼ teaspoon ground black pepper
  • 4 Tablespoons butter divided
  • 1 cup shredded gruyere
  • 1 cup shredded smoked gouda
  • 1 sleeve Ritz crackers or similar
US Customary - Metric

Instructions

  • Preheat oven to 350°F and grease a 9x13-inch pan.
  • Remove the ends and skins from the onions cut into rings about 1/2-3/4-inch wide. Arrange onion rings in prepared pan.
  • Mix together the seasonings and sprinkle over onions. Top with shredded cheese.
  • Cut half of the butter into thin slices and distribute over cheese.
  • Cover the pan tightly with foil and bake for 50 minutes. The onions should look softened.
  • Melt the remaining butter. Crush the crackers into crumbs and toss in the melted butter. Sprinkle over the casserole.
  • Bake for 15 more minutes, this time uncovered. The crackers should be golden and the onions should be nice and soft.
  • Enjoy warm.

Nutrition

Serving: 1serving | Calories: 144kcal | Carbohydrates: 9g | Protein: 6g | Fat: 10g | Saturated Fat: 6g | Polyunsaturated Fat: 3g | Cholesterol: 31mg | Sodium: 315mg | Fiber: 1g | Sugar: 6g
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