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Veggie casserole

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Total Time: 1 hour 15 minutes | Active Prep Time: 25 minutes | Cooking Time: 50 minutes
Difficulty: Easy | Season: All Year | Serves: 6

This vibrant Veggie Casserole is the epitome of cozy, wholesome cooking. Packed with colorful roasted vegetables, creamy white beans, and a golden, herb-infused breadcrumb topping, it’s a satisfying one-dish meal that celebrates plant-based goodness. It’s forgiving, flexible with whatever vegetables you have on hand, and guaranteed to fill your kitchen with an irresistible aroma. Perfect for meal prep, potlucks, or a comforting family dinner.

Ingredients

For the Vegetable Base:

  • 2 medium sweet potatoes, peeled and diced into 1/2-inch cubes

  • 1 large red bell pepper, roughly chopped

  • 1 medium zucchini, halved lengthwise and sliced into half-moons

  • 1 small head of broccoli, cut into small florets

  • 1 red onion, cut into wedges

  • 2 tablespoons olive oil

  • 1 teaspoon dried thyme

  • 1 teaspoon garlic powder

  • 1 teaspoon smoked paprika

  • Salt and black pepper to taste

For the Creamy Layer:

  • 2 (15 oz) cans cannellini beans, drained and rinsed

  • 1/2 cup vegetable broth

  • 1/3 cup nutritional yeast (or grated Parmesan for a non-vegan option)

  • 2 cloves garlic, minced

  • Zest and juice of 1 small lemon

  • 1/4 teaspoon ground nutmeg

For the Herb Crumb Topping:

  • 1 cup panko breadcrumbs (use gluten-free if needed)

  • 1/3 cup grated Parmesan cheese (or vegan alternative)

  • 1/4 cup chopped fresh parsley

  • 2 tablespoons olive oil

  • 1 tablespoon chopped fresh thyme (or 1 tsp dried)

For Garnish:

  • Fresh parsley or thyme leaves

Instructions

1. Prep and Roast the Vegetables (Time: 25 minutes active, 25 minutes hands-off)

Preheat your oven to 400°F (200°C). On a large, rimmed baking sheet, toss the prepared sweet potatoes, bell pepper, zucchini, broccoli, and red onion with the 2 tablespoons of olive oil. Sprinkle evenly with dried thyme, garlic powder, smoked paprika, salt, and pepper. Roast for 25-30 minutes, stirring once halfway through, until the vegetables are tender and starting to caramelize at the edges. Remove from oven and reduce oven temperature to 375°F (190°C).

2. Create the Creamy Bean Layer (Time: 10 minutes)

While the vegetables roast, prepare the creamy base. In a food processor or blender, combine the drained cannellini beans, vegetable broth, nutritional yeast, minced garlic, lemon zest, lemon juice, and nutmeg. Blend until completely smooth and creamy, scraping down the sides as needed. Season with salt and pepper to taste.

3. Assemble the Casserole (Time: 5 minutes)

Lightly grease a 9×13 inch (or similar 3-quart) baking dish. Spread the creamy bean mixture evenly across the bottom. Once the roasted vegetables are done, spoon them evenly over the bean layer, ensuring a good mix of colors and types throughout.

4. Add the Crispy Topping (Time: 2 minutes)

In a small bowl, mix the panko breadcrumbs, grated Parmesan, chopped parsley, 2 tablespoons of olive oil, and fresh thyme until the breadcrumbs are evenly coated and moistened. Sprinkle this mixture uniformly over the roasted vegetables.

5. Bake to Golden Perfection (Time: 20 minutes hands-off)

Place the assembled casserole in the preheated 375°F (190°C) oven. Bake for 20-25 minutes, or until the breadcrumb topping is deeply golden brown and crisp, and the casserole is bubbling around the edges.

6. Rest and Serve (Time: 5 minutes)

Remove the casserole from the oven and let it rest for 5-10 minutes. This allows the layers to set slightly, making it easier to serve. Garnish with extra fresh herbs just before serving.

Chef’s Notes & Variations

  • Vegetable Swap: Feel free to use butternut squash, cauliflower, mushrooms, or carrots. Aim for about 6-7 cups total of chopped veggies.

  • Make it a Main: For added protein, stir a cup of cooked lentils or shredded rotisserie chicken into the roasted veggies before assembling.

  • Make-Ahead Magic: Assemble the casserole completely (through step 4), cover, and refrigerate for up to 24 hours. Bake straight from the fridge, adding 5-10 extra minutes to the baking time.

  • Storage: Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat in the oven at 350°F for best texture, or microwave portions until hot.

Nutrition Information (Per Serving, 1 of 6 portions)

Note: Nutritional information is an estimate calculated using the specified ingredients and may vary with substitutions.

  • Calories: 345 kcal

  • Total Carbohydrates: 48g

  • Dietary Fiber: 12g

  • Sugars: 8g

  • Protein: 15g

  • Total Fat: 12g

    • Saturated Fat: 2.5g

  • Cholesterol: 5mg

  • Sodium: 420mg

Key Nutrients: This dish is an excellent source of Vitamin A (from sweet potatoes), Vitamin C (from bell peppers and broccoli), fiber (from beans and vegetables), and plant-based protein. The nutritional yeast provides a boost of B-vitamins.

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