Are you ready to transform ordinary vegetables into a mouthwatering masterpiece that will have everyone at your dinner table begging for seconds? This Zucchini Onion Au Gratin is not just a side dish—it's a creamy, cheesy, golden-brown sensation that elevates simple ingredients into a gourmet experience. Imagine layers of tender zucchini and sweet onions bathed in rich cream and topped with a crispy, irresistible cheese crust that will make your kitchen smell like a French countryside dream.
Prep Time: 10 mins
Cook Time: 35 mins
Total Time: 45 mins
Cuisine: French
Serves: 6 servings
Ingredients
- 3 medium zucchinis, sliced
- 1 large onion, sliced
- 2 cups shredded cheese
- 1 cup heavy cream
- 1 teaspoon garlic powder
- Salt and pepper to taste
- 1/2 cup breadcrumbs
Instructions
- Preheat the oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish with butter or cooking spray to prevent sticking.
- Wash the zucchinis and slice them into thin, uniform rounds approximately 1/4 inch thick. Use a sharp knife or mandoline slicer for consistent cuts.
- Peel and slice the large onion into thin rings, separating the layers to ensure even cooking and distribution throughout the dish.
- In a large mixing bowl, combine the heavy cream, garlic powder, salt, and pepper. Whisk the mixture until the seasonings are fully incorporated.
- Layer the sliced zucchini and onions alternately in the prepared baking dish, creating overlapping rows to ensure even coverage.
- Pour the seasoned cream mixture evenly over the zucchini and onion layers, ensuring all vegetables are lightly coated.
- Sprinkle the shredded cheese generously over the top of the vegetables, covering the entire surface.
- Distribute the breadcrumbs evenly across the cheese layer to create a crispy, golden-brown topping.
- Place the baking dish in the preheated oven and bake for 35 minutes, or until the top is golden brown and the vegetables are tender when pierced with a fork.
- Remove from the oven and let the dish rest for 5-10 minutes to allow the cheese to set and the flavors to meld together.
- Serve hot as a delicious side dish or light vegetarian main course, garnishing with fresh herbs like parsley or chives if desired.
Tips
- Use a mandoline slicer for uniform zucchini and onion slices to ensure even cooking and a professional presentation.
- Choose a high-quality, melting cheese like Gruyère or a blend of sharp cheddar and mozzarella for maximum flavor.
- Don't skip letting the dish rest after baking—this helps the cheese set and intensifies the flavors.
- For extra crunch, toast the breadcrumbs in a little butter before sprinkling them on top.
- If you want a lighter version, substitute half-and-half for heavy cream or use a mix of milk and cream.
- Fresh herbs like thyme or basil can add an extra layer of complexity to the dish.
- Serve immediately after the resting period for the best texture and temperature.
Nutrition Facts
Calories: 320kcal
Carbohydrates: 12g
Protein: 16g
Fat: 25g
Saturated Fat: 15g
Cholesterol: 75mg
