Onion Au Gratin
A rich and cheesy onion au gratin with caramelized onions and gooey cheddar, perfect as a comforting side or appetizer for family gatherings and casual dinners.
Ingredients
Instructions
- Mix cooked onions, 4 cups grated cheddar cheese, self-rising flour, black pepper, salt, and butter until well combined.
- Pour the mixture into a 2-quart casserole dish.
- Sprinkle the remaining 1 cup grated cheese evenly on top.
- Bake at 350°F for 30 minutes until bubbly and golden brown.
Nutrition & Diet Analysis (per serving)
549
kcal
27% DV
Protein
Fat
Carbs
Diet fit
High-fiber
Contains
Milk
Wheat/Gluten
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).
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).