Jamie Oliver’s vegetable casserole is a hearty, wholesome dish that celebrates fresh, seasonal veggies baked to tender perfection. This recipe works beautifully because it layers flavors with simple herbs, olive oil, and a rich tomato base, making it a versatile comfort food that’s both nutritious and satisfying.
Ingredients
- 2 tbsp olive oil
- 1 large onion, finely chopped
- 2 garlic cloves, minced
- 1 red bell pepper, diced
- 1 yellow bell pepper, diced
- 2 medium carrots, peeled and sliced
- 1 medium courgette (zucchini), sliced
- 200g green beans, trimmed and cut into 2-inch pieces
- 400g chopped tomatoes (canned or fresh)
- 2 tbsp tomato purée
- 1 tsp dried mixed herbs (oregano, thyme, rosemary)
- Salt and freshly ground black pepper, to taste
- Fresh basil leaves, a handful, torn
- 100g grated cheddar or mozzarella cheese (optional)
- Freshly grated Parmesan (optional, for serving)
Instructions
- Preheat your oven to 180°C (350°F) fan or 200°C (400°F) conventional.
- Heat the olive oil in a large frying pan over medium heat. Add the chopped onion and garlic, cooking gently for 5 minutes until softened but not browned.
- Add the diced red and yellow peppers, sliced carrots, courgette, and green beans. Cook for another 7-8 minutes, stirring occasionally, until the vegetables begin to soften.
- Stir in the chopped tomatoes, tomato purée, and dried mixed herbs. Season with salt and black pepper. Let the mixture simmer gently for 10 minutes, stirring occasionally so it thickens slightly.
- Transfer the vegetable mixture into a medium-sized ovenproof casserole dish. If using, sprinkle the grated cheese evenly over the top.
- Cover the dish loosely with foil and bake in the preheated oven for 35 minutes.
- After 35 minutes, remove the foil and bake for an additional 10-15 minutes, or until the cheese is golden and bubbling (if using cheese) and the vegetables are tender.
- Remove from the oven and scatter the torn fresh basil leaves on top. Let it rest for 5 minutes before serving.
Tips
- Vegetable substitutions: Feel free to swap in seasonal vegetables such as butternut squash, sweet potato, or mushrooms depending on availability and preference.
- Cheese alternatives: For a vegan version, omit cheese or use plant-based cheese alternatives. Nutritional yeast can also add a cheesy flavor without dairy.
- Make ahead: You can prepare the vegetable mixture a day in advance and refrigerate it. When ready to bake, bring to room temperature and adjust the seasoning before cooking.
- Common mistake: Avoid overcrowding the pan when sautéing vegetables; doing so can cause steaming instead of caramelizing, which reduces flavor depth.
Serving Suggestions
This vegetable casserole is perfect served on its own as a light meal or alongside crusty bread for dipping into the rich tomato sauce. It also pairs beautifully with steamed rice, quinoa, or a simple green salad dressed with lemon and olive oil. For a heartier dinner, serve it with grilled chicken or baked fish on the side.
Variations
You can easily customize this casserole to suit your taste or dietary needs. Add cooked chickpeas or cannellini beans for extra protein and texture. For a spicy kick, include a chopped chili or a pinch of chili flakes when sautéing the onions. Swap out the mixed herbs for curry powder or smoked paprika for a different flavor profile. Lastly, layering thin slices of potato or sweet potato on top before baking creates a gratin-style finish.
Storage and Reheating
Store any leftover casserole in an airtight container in the refrigerator for up to 3 days. To reheat, cover the casserole with foil and warm in a preheated oven at 160°C (320°F) for about 20 minutes, or microwave portions until heated through. Avoid reheating multiple times to maintain food safety and quality. For longer storage, freeze the casserole (without cheese topping) for up to 2 months; thaw overnight in the fridge before reheating.
Frequently Asked Questions
How long should I bake Jamie Oliver’s vegetable casserole?
The casserole should be baked covered for about 35 minutes, then uncovered for an additional 10-15 minutes. This allows the vegetables to cook fully and the topping (if using cheese) to brown nicely.
Can I prepare this casserole in advance?
Yes, you can make the vegetable mixture a day ahead and refrigerate it. When ready, bring it to room temperature and bake as instructed. This helps flavors to develop even more.
What if I don’t have all the vegetables listed?
The recipe is very flexible. Swap out or add any vegetables you have on hand, such as mushrooms, sweet potatoes, or spinach. Just adjust cooking times slightly if using denser vegetables.
Is this recipe suitable for vegans?
Absolutely! Simply omit the cheese or use a vegan cheese alternative. The dish is naturally rich and flavorful from the vegetables and herbs.
Can I use fresh tomatoes instead of canned?
Yes, fresh ripe tomatoes can be used but they should be peeled and chopped finely. You may need to simmer the mixture a little longer to reduce excess liquid.
What temperature should I bake the casserole at?
Bake the casserole at 180°C (350°F) fan or 200°C (400°F) conventional oven. This temperature ensures that the vegetables cook evenly without drying out.
How do I know when the casserole is done?
The casserole is ready when the vegetables are tender when pierced with a fork and the sauce is thickened and bubbling. The cheese topping (if used) should be golden and melted.
Can I add meat to this casserole?
Certainly! Cooked sausage, diced chicken, or minced beef can be mixed into the vegetable base before baking for a more substantial meal.
Jamie Oliver’s vegetable casserole is a brilliant, adaptable recipe that fits into busy lifestyles and changing seasons. With clear baking times and simple steps, it’s easy to bring vibrant, wholesome flavors to your table every week.
Related
- Jamie Oliver Nut Roast Recipe vs Traditional Stuffing
- Jamie Oliver Nut Roast Recipe Using a Slow Cooker for Easy Meals
- Jamie Oliver Nut Roast Recipe with Gluten Free Ingredients