Creamy Broccoli and Cauliflower Gratin with Mustard Crust
Looking for a side dish that combines comfort with a touch of elegance? This creamy broccoli and cauliflower gratin is your answer. It's the perfect balance of tender vegetables and a rich, cheesy sauce that's elevated with a zesty mustard crust. A showstopper for any meal.
Ingredients
- 2 cups broccoli florets
- 2 cups cauliflower florets
- 1 cup heavy cream
- 1 cup shredded cheddar cheese
- 1/2 cup grated parmesan cheese
- 1 tablespoon Dijon mustard
- 1/2 teaspoon garlic powder
- 1/4 teaspoon black pepper
- 1 cup breadcrumbs
- 2 tablespoons melted butter
- Salt to taste
Instructions
- Preheat the Oven: Preheat your oven to 375°F (190°C).
- Prepare the Vegetables: Steam the broccoli and cauliflower florets until just tender, about 5 minutes. Drain and set aside.
- Make the Cheese Sauce: In a saucepan, heat the heavy cream over medium heat. Stir in the cheddar cheese, Parmesan cheese, Dijon mustard, garlic powder, and black pepper. Cook until the cheeses are melted and the sauce is smooth.
- Combine: In a large mixing bowl, combine the steamed broccoli and cauliflower with the cheese sauce. Mix until the vegetables are evenly coated.
- Prepare the Topping: In a separate bowl, mix the breadcrumbs with melted butter and a pinch of salt.
- Assemble: Pour the vegetable and cheese mixture into a greased baking dish. Sprinkle the breadcrumb mixture evenly over the top.
- Bake: Bake in the preheated oven for 25-30 minutes, or until the top is golden brown and crispy.
- Serve: Allow to cool slightly before serving. Enjoy your creamy gratin!
Cook’s tips
- Steam the vegetables until just tender; they will continue cooking in the oven, so avoid overcooking them initially.
- Use fresh breadcrumbs for a lighter, crispier topping; panko also works well.
- Let the gratin rest for 5-10 minutes after baking to allow the sauce to set slightly before serving.
- For extra flavor, add a pinch of nutmeg or a dash of smoked paprika to the cheese sauce.
- Make sure the cheese sauce is smooth by stirring continuously while melting the cheeses.
Substitutions
- Use half-and-half or whole milk instead of heavy cream for a lighter sauce.
- Swap cheddar for Gruyère or Swiss cheese for a more sophisticated flavor.
- Use gluten-free breadcrumbs or crushed crackers to make it gluten-free.
- Substitute whole-grain mustard for Dijon for a more textured mustard flavor.
- Add a handful of chopped fresh herbs like thyme or parsley to the topping for extra freshness.
Storage & reheating
Store leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, place in a 350°F oven for 10-15 minutes to restore the crispy topping.
Frequently asked questions
Can I prepare this gratin ahead of time?
Yes, you can assemble the gratin (without the breadcrumb topping) and refrigerate it for up to 24 hours. Add the topping just before baking and increase baking time by a few minutes.
Can I freeze this dish?
Yes, you can freeze the baked gratin. Allow it to cool completely, wrap tightly, and freeze for up to 2 months. Reheat in the oven, covered, until heated through, then uncover to crisp the top.
What can I use instead of Dijon mustard?
You can use whole-grain mustard, yellow mustard, or even a teaspoon of dry mustard powder mixed with a little water. The flavor will vary slightly but still work well.
Is this recipe vegetarian?
Yes, it is vegetarian as written, but check the cheese for rennet if you follow a strict vegetarian diet.
