Vegetable casserole with hemp topping – comfort food

Vegetable casserole is a dish that tastes better than it looks on the ingredient list. The combination of soft, caramelized vegetables, tomato sauce, and a crispy crust is a classic comfort food. Replace regular breadcrumbs with a mix of hulled hemp seeds – the topping will gain nuttiness, a golden color, and several grams of extra protein. You can adjust the vegetables to the season: zucchini and bell peppers in summer, pumpkin and sweet potatoes in autumn. Ready in an hour, it serves 4.

KEY INFORMATION
• 4 tablespoons of hulled hemp seeds (40 g) provide about 12 g of protein and all 9 essential amino acids (House et al., Food Chemistry, 2010).
• Hemp seeds contain about 210 mg of magnesium per 100 g – 50% of the daily requirement for an adult (USDA FoodData Central, 2023).
• The omega-6 to omega-3 ratio in hemp seeds is about 3:1 – close to optimal for humans (Callaway, Euphytica, 2004).
• Hemp seeds can withstand baking for up to 35 minutes at 190°C when covered with a layer of oil and breadcrumbs.

Why is it worth adding hemp seeds to the topping?

Casserole toppings traditionally consist of breadcrumbs, grated cheese, and butter or oil. This combination provides crunch and a golden color, but adds almost no protein or nutritional value. Hemp seeds change this equation. Four tablespoons (40 g) provide about 12 g of protein with a complete amino acid profile – House et al. (Food Chemistry, 2010) confirm that hemp seeds contain all 9 essential amino acids, including leucine, which is crucial for muscle protein synthesis.

Magnesium in hemp seeds (about 210 mg/100 g according to USDA FoodData Central) covers about 25% of the daily requirement for an adult in a serving of topping. The vegetables in the casserole – especially bell peppers (rich in vitamin C) and tomatoes (lycopene) – contribute their own phytonutrients. Together, they create a dish that is filling, tasty, and surprisingly nutritious for a classic casserole.

We noticed in tests that the hemp topping browns faster than the breadcrumbs themselves. At 190°C for 35 minutes, it is golden and crispy. At 200°C for 40 minutes, it starts to darken and become bitter. If your oven heats unevenly, cover the casserole with foil for the first 20 minutes and uncover it for the last 15 – the topping will brown without the risk of overcooking.

Nutritional values – what does this serving provide?

One serving of casserole (about 350 g) with vegetables, tomato sauce, and hemp topping provides about 280–320 kcal, 13 g of protein, 14 g of fat, and 28 g of carbohydrates. The fiber from the vegetables and hemp seeds totals about 7 g per serving. Without cheese, it is fully vegan and gluten-free (if you use oats instead of wheat breadcrumbs).

Ingredients – what do you need?

Proportions for 4 servings. Preparation time: 20 minutes. Baking time: 30–35 minutes.

• 2 zucchinis (about 400 g)
• 2 bell peppers (red and yellow)
• 1 eggplant (about 300 g)
• 2 ripe tomatoes or 1 can (400 g) of diced tomatoes
• 1 onion
• 3 cloves of garlic
• 4 tablespoons of hulled hemp seeds
• 4 tablespoons of breadcrumbs or fine oat flakes
• 3 tablespoons of olive oil
• 100 g of grated mozzarella or yellow cheese (optional)
• 1 teaspoon of dried oregano
• 1 teaspoon of dried thyme
• salt, freshly ground black pepper
• fresh basil for serving

How to prepare a vegetable casserole with hemp topping – step by step?

The casserole is simple, but it requires two stages: sautéing the vegetables and then baking in the oven. It's worth sautéing the vegetables beforehand – without this step, too much water will be released during baking, and the casserole will turn out watery, not creamy.

Step 1. Preheat the oven. Set the oven to 190°C (top-bottom). Grease a baking dish with a thin layer of olive oil and set aside.

Step 2. Sauté the vegetables. Cut the zucchini, bell pepper, and eggplant into thick slices or large cubes (about 2 cm). In a large skillet, heat 2 tablespoons of olive oil. Add finely chopped onion and garlic, sauté for 3 minutes. Add the vegetables and sauté over high heat for 6–8 minutes, stirring occasionally. The vegetables should soften slightly but not be fully cooked – they will finish cooking in the oven.

Step 3. Prepare the sauce and assemble the casserole. Mix the chopped tomatoes with oregano, thyme, salt, and pepper. Pour half of the sauce into the bottom of the baking dish. Layer the sautéed vegetables. Drizzle with the remaining sauce. If using cheese, sprinkle it over the vegetable layer before adding the topping.

Step 4. Prepare the hemp topping. In a bowl, combine hulled hemp seeds, breadcrumbs, 1 tablespoon of olive oil, and a pinch of salt. Mix with moist movements – the topping should hold together, not be too dry. Evenly sprinkle over the top of the casserole.

Step 5. Bake and serve. Bake in the preheated oven for 30–35 minutes. The topping should be golden and crispy. After removing from the oven, wait 5 minutes before serving – the casserole will set and be easier to spread. Sprinkle with fresh basil before serving.

Tips and variations

Here are some ideas for modifications and tips for this recipe:

Autumn version. Replace zucchini and bell pepper with hokkaido pumpkin (sliced) and sweet potatoes (cubed). Extend the baking time to 45 minutes. The hemp topping with cinnamon and a pinch of nutmeg creates an unexpected but very tasty combination with pumpkin.

Lentil version. Add 150 g of cooked green lentils to the tomato sauce – the casserole becomes more filling and rich in protein. The lentils absorb the flavor of the tomatoes and spices, creating a thicker layer under the topping.

Gluten-free version. Replace breadcrumbs in the topping with finely ground gluten-free oat flakes or ground walnuts. The crunch effect is similar, but the flavor is deeper.

Also check out our recipe for casserole with pumpkin and hemp seeds – another hearty autumn dish with hemp seeds.

Frequently asked questions

Can hemp seeds be baked in the oven?

Hemp seeds can withstand baking at 190°C for 30–35 minutes on top of the casserole. A layer of breadcrumbs and oil protects them from direct overheating. Longer baking above 40 minutes or temperatures of 200°C+ can oxidize omega-3 fatty acids (PMC, 2020). Avoid baking the seeds alone without a protective layer.

What vegetables go well with a hemp sprinkle casserole?

The best options are vegetables with a similar baking time: zucchini, bell peppers, eggplant, and tomatoes. Root vegetables (carrots, sweet potatoes) should be pre-baked separately for 15 minutes. Hemp seeds contain about 210 mg of magnesium/100 g (USDA, 2023) – a valuable mineral regardless of the vegetables in the dish.

How much protein do hemp seeds have in the sprinkle?

Four tablespoons of hulled hemp seeds (about 40 g) provide approximately 12 g of protein with a complete amino acid profile (House et al., Food Chemistry, 2010). This is one of the simpler ways to increase the protein content in casseroles without changing their flavor profile.

Can the casserole with hemp sprinkle be reheated?

Store the casserole in the refrigerator for up to 3 days. Reheat in the oven at 160°C for 15 minutes or in the microwave for 3 minutes. After reheating, the sprinkle will lose its crunch – you can add an extra raw portion of hulled hemp seeds just before serving to restore the texture.

This article is for informational and educational purposes and does not replace consultation with a physician. If you are pregnant, breastfeeding, taking medications, or have chronic conditions, consult the use of supplements or herbs with a specialist.

Author: Michał Waluk · Published: 2026-05-04 · Updated: 2026-05-04