Rainbow Vegetable Gratin is a vibrant and hearty dish that showcases a variety of colorful vegetables baked in a creamy sauce and topped with a crispy, golden crust. This dish is not only visually appealing but also packed with nutrients, making it a perfect side dish or a vegetarian main course. The combination of flavors and textures will delight your taste buds!

Ingredients List

For the Gratin

• 2 cups zucchini, sliced
• 2 cups bell peppers (red, yellow, green), chopped
• 2 cups carrots, sliced
• 2 cups broccoli florets
• 1 cup cherry tomatoes, halved
• 1 medium onion, chopped
• 3 cloves garlic, minced
• 2 tablespoons olive oil
• Salt and pepper to taste
• 1 teaspoon dried thyme (or fresh thyme)
• 1 teaspoon dried oregano

For the Creamy Sauce

• 1 cup heavy cream (or plant-based cream)
• 1 cup shredded cheese (cheddar, mozzarella, or a vegan alternative)
• 1/4 cup grated Parmesan cheese (optional)
• 2 tablespoons all-purpose flour
• 1 tablespoon Dijon mustard (optional)
• Salt and pepper to taste

For the Topping

• 1 cup breadcrumbs (panko or regular)
• 2 tablespoons olive oil
• 1/4 cup grated Parmesan cheese (optional)
• Fresh herbs for garnish (such as parsley or basil)

Timing

Preparing Rainbow Vegetable Gratin takes about 20 minutes for prep and 30-35 minutes for baking.

Step-by-Step Instructions

Step 1: Preheat the Oven

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Prepare Baking Dish: Grease a large baking dish or gratin dish with olive oil or cooking spray.

Step 2: Sauté the Vegetables

1. Heat Olive Oil: In a large skillet over medium heat, add the olive oil and sauté the chopped onion and minced garlic until translucent.
2. Add Vegetables: Stir in the zucchini, bell peppers, carrots, and broccoli. Season with salt, pepper, thyme, and oregano. Sauté for about 5-7 minutes until the vegetables are slightly tender.
3. Add Cherry Tomatoes: Gently fold in the cherry tomatoes and remove from heat.

Step 3: Prepare the Creamy Sauce

1. Make a Roux: In a saucepan, whisk together the flour and a splash of the cream over medium heat until smooth. Gradually add the remaining cream, stirring continuously until the mixture thickens.
2. Add Cheese and Seasoning: Remove from heat and stir in the shredded cheese, Parmesan (if using), Dijon mustard, salt, and pepper until well combined. The sauce should be creamy and cheesy.

Step 4: Assemble the Gratin

1. Layer the Vegetables: Spread the sautéed vegetables evenly in the prepared baking dish.
2. Pour the Sauce: Pour the creamy cheese sauce over the vegetables, ensuring they are well coated.

Step 5: Add the Topping

1. Prepare Breadcrumb Mixture: In a small bowl, combine the breadcrumbs, olive oil, and grated Parmesan (if using). Mix until the breadcrumbs are evenly coated.
2. Top the Gratin: Sprinkle the breadcrumb mixture evenly over the vegetable and sauce layer.

Step 6: Bake the Gratin

1. Bake: Place the baking dish in the preheated oven and bake for 30-35 minutes, or until the top is golden brown and the vegetables are tender.
2. Cool: Remove from the oven and let it cool slightly before serving.

Step 7: Serve

1. Garnish: Garnish with fresh herbs if desired.
2. Enjoy: Serve warm as a side dish or a main course!

Nutritional Information

Here’s a quick glance at the nutritional profile of Rainbow Vegetable Gratin (per serving, assuming 6 servings):

Nutrient	Amount per Serving
Calories	250
Protein	10g
Fat	15g
Carbohydrates	25g
Fiber	4g

Tips for Customization

• Vegetable Variations: Feel free to use any seasonal vegetables you have on hand, such as eggplant, asparagus, or spinach.
• Cheese Alternatives: For a vegan version, use plant-based cream and cheese alternatives.
• Spice It Up: Add red pepper flakes or your favorite hot sauce to the creamy sauce for a kick.

Storing Tips for the Recipe

Rainbow Vegetable Gratin can be stored in an airtight container in the refrigerator for up to 3 days. Reheat in the oven or microwave before serving.

Conclusion

Rainbow Vegetable Gratin is a colorful and nutritious dish that brings together a variety of vegetables in a creamy, cheesy sauce, all topped with a crunchy breadcrumb layer. This gratin is perfect for any occasion, whether it’s a family dinner or a festive gathering. Enjoy the burst of flavors and the comforting textures in every bite!

FAQs

Can I make this gratin ahead of time?

Yes! You can prepare the gratin in advance, cover it, and refrigerate it. Just bake it when you’re ready to serve.

What can I serve with Rainbow Vegetable Gratin?

This dish pairs well with a fresh green salad, crusty bread, or as a side to roasted meats or fish.

Can I freeze the gratin?

Yes! You can freeze the assembled gratin before baking. Just cover it tightly and freeze for up to 2 months. Bake from frozen, adding extra time to the cooking time.