This Jamie Oliver vegetable casserole with sweet potatoes is a hearty, wholesome dish perfect for cozy dinners. Combining tender, caramelized sweet potatoes with seasonal vegetables and fragrant herbs, it balances sweetness and savory flavors beautifully, making it a nutritious one-pan meal that’s easy to prepare and packed with vibrant colors and textures.
Ingredients
- 2 large sweet potatoes (about 600g), peeled and cut into 2cm chunks
- 1 large red onion, peeled and sliced into wedges
- 2 red bell peppers, deseeded and cut into strips
- 2 medium carrots, peeled and sliced
- 200g green beans, trimmed and halved
- 3 cloves garlic, minced
- 1 medium courgette (zucchini), sliced into thick rounds
- 400g canned chopped tomatoes
- 2 tbsp tomato purée
- 1 tsp smoked paprika
- 1 tsp dried oregano
- 1 tsp dried thyme
- 100ml vegetable stock
- 3 tbsp olive oil
- Salt and freshly ground black pepper, to taste
- Fresh parsley or basil, chopped, for garnish
- Optional: 100g feta cheese, crumbled (for serving)
Instructions
- Preheat your oven to 200°C (fan 180°C) / 400°F / Gas mark 6.
- In a large roasting dish or casserole, combine the sweet potato chunks, sliced red onion, red pepper strips, carrots, green beans, and courgette. Drizzle with 2 tablespoons of olive oil, sprinkle with salt and pepper, and toss to coat evenly.
- Roast the vegetables in the oven for 25 minutes until they start to soften and caramelize around the edges.
- Meanwhile, in a medium bowl, mix the canned chopped tomatoes, tomato purée, minced garlic, smoked paprika, oregano, thyme, vegetable stock, and remaining 1 tablespoon of olive oil. Season with a little salt and pepper.
- Remove the roasting dish from the oven and pour the tomato mixture evenly over the partially roasted vegetables. Stir gently to combine.
- Return the dish to the oven and bake for another 20-25 minutes until the vegetables are tender and the sauce has thickened slightly.
- Check seasoning and adjust salt and pepper if needed. Garnish with freshly chopped parsley or basil just before serving.
- If using, sprinkle crumbled feta cheese on top for a creamy, salty finish.
Tips
- Substitutions: Swap sweet potatoes for butternut squash or regular potatoes if preferred. Use any seasonal vegetables available such as broccoli, cauliflower, or mushrooms to add variety.
- Make it vegan: Omit the feta cheese or replace it with a vegan cheese alternative or toasted nuts for texture.
- Don’t overcrowd the dish: Spread vegetables evenly in the roasting dish to ensure they roast rather than steam, which helps develop flavor and texture.
- Common mistake: Avoid chopping sweet potatoes too small as they can become mushy. Aim for chunky, uniform pieces to roast evenly.
Serving Suggestions
This vegetable casserole is a versatile dish that works well as a main or a side. Serve it with crusty bread or warm flatbreads to soak up the rich tomato sauce. It also pairs beautifully with a crisp green salad for a fresh contrast. For a heartier meal, add a dollop of Greek yogurt or a fried egg on top.
Variations
For a Mediterranean twist, add olives and capers to the tomato mix before roasting. If you prefer a spicier flavor, mix in some chili flakes or a chopped fresh chili with the garlic. You can also turn this into a grain bowl by serving the casserole over cooked quinoa, couscous, or brown rice. For a protein boost, stir in some cooked chickpeas or white beans halfway through roasting.
Storage and Reheating
Store any leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, warm gently in a covered ovenproof dish at 160°C (fan 140°C) / 320°F for 15-20 minutes or microwave until steaming hot throughout. Avoid reheating multiple times to maintain texture and food safety. This casserole can also be frozen for up to 2 months; defrost overnight in the fridge before reheating.
Frequently Asked Questions
Can I prepare this casserole in advance?
Yes, you can assemble the casserole up to the point before roasting and store it covered in the fridge for up to 24 hours. When ready, roast as directed, adding a few extra minutes if the vegetables are cold.
What if I don’t have fresh herbs?
Dried herbs work well in this recipe and are included in the tomato sauce mix. If you only have dried parsley or basil, sprinkle them on at the end or substitute with a pinch of dried Italian seasoning.
Is this dish suitable for meal prep?
Absolutely. The casserole keeps well and tastes even better the next day as flavors meld. Portion it out for lunches or quick dinners throughout the week.
Can I add meat or fish to this vegetable casserole?
While the recipe is vegetarian, you can add cooked chicken pieces, sausage slices, or even flaked cooked fish like salmon to make it more substantial. Add them in the last 10 minutes of baking to warm through without overcooking.
How do I prevent the sweet potatoes from falling apart?
Choose firm sweet potatoes and cut them into chunks rather than small cubes. Roast them at a high temperature initially to caramelize the outside, which helps keep their shape.
What is the best way to enhance the flavor?
Roasting vegetables slowly develops natural sweetness and depth. Using smoked paprika adds a subtle smoky note, but you can also add a splash of balsamic vinegar or a squeeze of lemon juice before serving to brighten the dish.
This Jamie Oliver vegetable casserole with sweet potatoes is a perfect example of simple ingredients coming together to create a delicious, nutritious meal. With its flexibility and ease, it’s ideal for weeknights or batch cooking. Enjoy experimenting with your favorite vegetables and seasonings to make it your own!
For a comforting, colorful, and healthy meal that requires minimal fuss, this casserole is a winner in any kitchen.
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