Sweet Onion Casserole Recipe
Looking for a versatile and flavorful dish to impress your guests or enjoy at home? This Sweet Onion Casserole blends the sweetness of onions with creamy cheese and savory herbs. It’s a comforting, crowd-pleasing recipe perfect for holidays or weeknight dinners.
Ingredients
| Ingredient | Quantity |
|---|---|
| Sweet onions | 4 large |
| Butter | 1/4 cup |
| Garlic cloves | 3, minced |
| Thyme leaves | 1 tsp |
| Heavy cream | 1 cup |
| Gruyere cheese | 1 cup, grated |
| Parmesan cheese | 1/2 cup, grated |
| Breadcrumbs | 1/2 cup |
| Salt | To taste |
| Black pepper | To taste |
Instructions
- Prepare the Onions: Peel and thinly slice the sweet onions. Set aside.
- Sauté: In a large skillet, melt the butter over medium heat. Add garlic and sauté until fragrant.
- Caramelize: Add sliced onions and cook until golden and soft, about 15–20 minutes.
- Add Thyme: Stir in thyme leaves and mix well.
- Pour Cream: Add the heavy cream and let it simmer until slightly thickened.
- Add Cheese: Gradually stir in Gruyere and Parmesan until melted and creamy.
- Season: Add salt and pepper to taste.
- Assemble: Transfer to a greased baking dish and top with breadcrumbs.
- Bake: Bake at 375°F (190°C) for 20–25 minutes or until golden and bubbly.
- Serve: Let cool slightly and serve warm.
Tips for Perfection
- Use sweet onions like Vidalia or Walla Walla for the best flavor.
- Fresh thyme adds a more vibrant herbal note than dried.
- Try mixing in cheddar or fontina for a richer cheese blend.
- Make ahead: Assemble and refrigerate up to 24 hours before baking.
FAQs
Can I use regular onions? Yes, but the flavor won’t be as sweet. Cook longer to mellow the flavor.
Can I substitute the cream? Half-and-half or whole milk can be used, but the result will be less rich.
Is this gluten-free? Use gluten-free breadcrumbs for a gluten-free version.
Serving Suggestions
- Pair with roasted chicken or turkey.
- Serve alongside a fresh green salad.
- Perfect addition to holiday spreads or potlucks.
Conclusion
This Sweet Onion Casserole is creamy, cheesy, and irresistibly delicious. It’s sure to become a family favorite and a go-to side dish for both everyday dinners and festive occasions.
