Cheese-Onion Casserole
A cheesy, savory casserole blending sharp cheddar and cooked onions, baked to perfection and topped with breadcrumbs for a comforting, flavorful dish suited for family dinners.
Ingredients
Instructions
- Put the grated cheddar cheese, cooked chopped onions, self-rising flour, pepper, and salt into a buttered casserole dish.
- Dot the mixture with small bits of butter.
- Bake in a 350°F oven for 30 minutes.
- Optional: Top with bread crumbs before serving.
Tips & Substitutions
For a creamier texture, consider adding a cup of sour cream or cream cheese to the mixture. If you're short on cheddar, a mix of Gruyère or Monterey Jack can work beautifully. To enhance flavors, sauté the onions with garlic before adding them. For a lower-carb option, substitute the self-rising flour with almond flour, though the texture may differ slightly.
Serving Suggestions
This cheese-onion casserole pairs beautifully with a fresh green salad or roasted vegetables for a complete meal. You can also serve it alongside grilled meats or as a hearty side dish at potlucks. For added crunch, consider topping it with bread crumbs or crushed crackers before baking, and serve with a dollop of sour cream on the side.
Storage & Reheating
Leftover cheese-onion casserole can be stored in an airtight container in the refrigerator for up to 3 days. To reheat, place it in a preheated oven at 350°F until warmed through, about 15-20 minutes. If you prefer, you can also microwave it for quicker reheating, but the oven will help maintain the casserole's texture.
Nutrition & Diet Analysis (per serving)
Each serving of Cheese-Onion Casserole contains roughly 1374 calories, with 75g protein, 37g carbohydrates, and 106g fat. It is an excellent source of vitamin C (276% of the Daily Value), calcium (154% of the Daily Value), and protein (150% of the Daily Value), and a good source of iron. Note that it is relatively high in sodium, at 2351mg per serving (102% of the Daily Value).
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).
Frequently Asked Questions
Can I prepare this casserole in advance?
Yes, you can prepare the casserole ahead of time. Assemble it and cover tightly with plastic wrap or foil, then refrigerate for up to 24 hours. When ready to bake, remove from the refrigerator and allow it to come to room temperature before baking as directed.
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).