Scalloped St Augustine Sweet Onions
Discover the savory decadence of Scalloped St. Augustine Sweet Onions, a comforting casserole that transforms naturally sweet St. Augustine onions into a creamy, cheesy masterpiece. This recipe layers tender slices of sweet onions with a rich, velvety sauce made from sharp cheddar, Parmesan, and a hint of nutmeg, then finishes with a golden, crunchy panko breadcrumb topping for irresistible texture. Perfect as an elegant side dish or a standout vegetarian main, this baked delight comes together in under an hour, making it ideal for both weeknight dinners and holiday gatherings. Garnished with fresh parsley for a pop of color and flavor, this dish is your new go-to for crowd-pleasing comfort food. Keywords: St. Augustine sweet onions, scalloped onions recipe, cheesy onion casserole, savory baked side, creamy onion dish.
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Recipe Information
Ingredients
- 4 large St. Augustine sweet onions
- 4 tablespoons Unsalted butter
- 3 tablespoons All-purpose flour
- 2 cups Whole milk
- 1 cup Heavy cream
- 1.5 cups Shredded sharp cheddar cheese
- 0.5 cups Grated Parmesan cheese
- 1 teaspoon Salt
- 0.5 teaspoons Black pepper
- 0.25 teaspoons Ground nutmeg
- 0.75 cups Panko breadcrumbs
- 2 tablespoons Fresh parsley, chopped
- 1 tablespoon Olive oil
Instructions
Preheat your oven to 375°F (190°C) and lightly grease a medium-sized baking dish.
Peel and thinly slice the St. Augustine sweet onions into evenly-sized rings, about 1/4 inch thick.
In a medium saucepan, melt the unsalted butter over medium heat. Once melted, whisk in the all-purpose flour to create a roux. Cook for 1-2 minutes, stirring constantly, until the mixture is golden and begins to smell nutty.
Gradually whisk in the whole milk and heavy cream, making sure to eliminate any lumps. Cook, stirring frequently, for about 4-5 minutes, or until the sauce thickens.
Stir in the shredded sharp cheddar cheese and grated Parmesan cheese until fully melted and smooth. Add salt, black pepper, and ground nutmeg, and mix well. Remove from heat.
Spread a thin layer of the cheese sauce on the bottom of the prepared baking dish. Layer one-third of the onion slices on top, followed by a layer of the cheese sauce. Repeat this process until all onions and cheese sauce are used, finishing with a layer of sauce.
In a small bowl, mix the panko breadcrumbs, fresh parsley, and olive oil until the breadcrumbs are evenly coated. Sprinkle this mixture over the top of the dish.
Bake in the preheated oven for 30-40 minutes, or until the top is golden brown and bubbling. If the breadcrumbs are browning too quickly, cover the dish loosely with aluminum foil.
Remove from the oven and allow the dish to cool for about 5-10 minutes before serving. Garnish with additional fresh parsley if desired.
Nutrition Facts
Calories |
533 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 37.6 g | 48% | |
| Saturated Fat | 22.2 g | 111% | |
| Polyunsaturated Fat | 0.0 g | ||
| Cholesterol | 106 mg | 35% | |
| Sodium | 783 mg | 34% | |
| Total Carbohydrate | 31.8 g | 12% | |
| Dietary Fiber | 2.9 g | 10% | |
| Total Sugars | 11.6 g | ||
| Protein | 15.7 g | 31% | |
| Vitamin D | 1.1 mcg | 6% | |
| Calcium | 414 mg | 32% | |
| Iron | 1.3 mg | 7% | |
| Potassium | 342 mg | 7% | |
*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
