Description
French onion casserole brings pure comfort straight to your dinner table, melding rich caramelized onions with a golden, cheesy topping that makes weeknight meals seriously delicious.
Ingredients
Scale
Main Ingredients:
- 4 large onions
- 1 cup Gruyere cheese
- 1 cup French bread
- ½ cup Parmesan cheese
Liquid Ingredients:
- 2 cups beef broth
- 1 cup heavy cream
- 4 tablespoons unsalted butter
Seasoning Ingredients:
- 1 teaspoon thyme
- Salt
- Pepper
Instructions
- Slice 4 large onions into thin, uniform strips for even caramelization.
- Melt 4 tablespoons unsalted butter in a large skillet over medium heat, ensuring complete coverage of the pan’s surface.
- Add sliced onions with a pinch of salt, stirring frequently to prevent burning during the 20-25 minute caramelization process.
- Pour 2 cups beef broth into the skillet, sprinkling 1 teaspoon thyme and ground pepper over the onions.
- Simmer the broth mixture for exactly 5 minutes, allowing flavors to meld together smoothly.
- Gently stir 1 cup heavy cream into the skillet, blending thoroughly before removing from heat.
- Preheat your oven to 350°F (175°C) while preparing the baking dish.
- Spread half of the 1 cup cubed French bread across the bottom of a casserole dish.
- Ladle half of the onion cream mixture evenly over the bread layer.
- Sprinkle ½ cup grated Gruyere cheese across the first layer.
- Repeat bread, onion mixture, and cheese layers using remaining ingredients.
- Cover the casserole with aluminum foil and bake for 25 minutes.
- Remove foil and continue baking for 15-20 minutes until the top turns golden and edges bubble.
- Let your casserole rest for 10 minutes before serving to allow flavors to settle.
- Top with remaining ½ cup Parmesan cheese for an extra crispy finish.
Notes
- Caramelizing onions takes patience, so keep the heat low and stir occasionally to prevent burning while developing deep, rich flavor.
- For a lighter version, swap heavy cream with half-and-half or whole milk, and use sourdough or whole wheat bread for added nutrition.
- Gruyere can be expensive, so sharp cheddar or a blend of Swiss and Parmesan work great as budget-friendly alternatives.
- Prep ingredients in advance and assemble the casserole earlier in the day, then refrigerate and bake when ready to serve for easy entertaining.
- Prep Time: 25 minutes
- Cook Time: 45 minutes
- Category: Casseroles
- Method: Baking
- Cuisine: French
Nutrition
- Serving Size: 4
- Calories: 380 kcal
- Sugar: 6 g
- Sodium: 700 mg
- Fat: 28 g
- Saturated Fat: 16 g
- Unsaturated Fat: 10 g
- Trans Fat: 0.5 g
- Carbohydrates: 20 g
- Fiber: 2 g
- Protein: 15 g
- Cholesterol: 70 mg