Sweet Potato Veggie Bake

Ingredients

• 2 large (about 700 g)sweet potatoes, peeled and cut into roughly 2.5 cm cubes
• 1 largered onion, cut into 2.5 cm wedges
• 1red pepper, deseeded and cut into 2.5 cm pieces
• 1yellow or orange pepper, deseeded and cut into 2.5 cm pieces
• 1 headbroccoli, cut into medium florets about 4–5 cm across
• 4 clovesgarlic, minced or thinly sliced
• 45 ml (3 tablespoons)olive oil
• 1 teaspoondried rosemary, lightly crushed
• 1 teaspoondried thyme
• ½ teaspoonsmoked paprika (optional)
• ½ teaspoon, or to tastesea salt
• ¼ teaspoonblack pepper, preferably freshly ground
• To taste (optional)fresh parsley or coriander, chopped, to garnish
• To taste (optional)crumbled feta or goat’s cheese

Instructions

1. 1

   Heat the oven

   Heat the oven to 200°C (400°F). Line a large baking tray with baking parchment, or use two smaller trays if needed to leave enough room for the vegetables.

2. 2

   Prepare the vegetables

   Wash and dry the vegetables thoroughly. Peel and cut the sweet potatoes into even 2.5 cm cubes, cut the peppers into similar-sized pieces, slice the onion into 2.5 cm wedges and divide the broccoli into medium florets. Mince or thinly slice the garlic.

3. 3

   Add the oil

   Put the sweet potatoes, peppers, onion and broccoli in a large bowl. Drizzle over the 45 ml olive oil.

4. 4

   Coat the vegetables

   Toss the vegetables with your hands or a large spoon until each piece is lightly coated in oil.

5. 5

   Add the seasonings

   Scatter over the garlic, rosemary, thyme, smoked paprika if using, salt and black pepper.

6. 6

   Toss with herbs

   Toss again so the garlic and seasonings are distributed across the vegetables.

7. 7

   Spread on trays

   Arrange the vegetables in a single layer on the prepared tray or trays, leaving space between pieces. Use a second tray if they would otherwise be crowded.

8. 8

   Roast the vegetables

   Roast in the preheated oven for 35–45 minutes.

9. 9

   Stir halfway through

   At about the 20-minute mark, take the tray out and stir or turn the vegetables with a spatula. If using two trays, swap their positions in the oven, moving them from top to bottom and front to back.

10. 10

    Check for doneness

    Continue roasting until a fork passes easily through the sweet potatoes, whose edges should be lightly caramelised, and the broccoli and peppers are tender-crisp with browned spots. Start checking at 35 minutes; cooking time depends on your oven and the size of the pieces.

11. 11

    Add optional cheese

    If using feta or goat’s cheese, scatter it over the vegetables for the final 5–7 minutes of roasting, until just softened.

12. 12

    Rest and serve

    Take the tray out of the oven and leave the bake to rest for a couple of minutes. If you like, finish with chopped parsley or coriander before serving.

What is a sweet potato veggie bake?

This is a tray-baked mix of root vegetable, peppers, onion and broccoli, seasoned with garlic and dried herbs. It draws on the simple approach of roasting vegetables together rather than on one specific traditional dish.

Sweet potatoes bring a soft, naturally sweet base, while broccoli and peppers add firmer textures and savoury notes. Cutting the vegetables evenly and giving them space on the tray helps them roast instead of steam.

Nutrition and macros by portion

The nutrition label shows one serving as written: 350 calories, 0g protein, 0g carbs, 0g fat.

The sweet potatoes provide most of the carbohydrate, while olive oil is the main source of fat; the vegetables contribute smaller amounts of protein. For a more balanced plate, serve a portion alongside a protein-rich food such as beans, lentils or eggs.

Choosing and cutting the vegetables

Sweet potatoes: Cut them into roughly 2.5 cm cubes so they have time to soften during the same roast as the other vegetables.

Broccoli: Keep the florets medium-sized, about 4–5 cm across. Very small pieces can brown or burn before the sweet potatoes are tender.

Peppers and onion: Cut them into pieces of a similar size to encourage even cooking and make the finished bake easy to serve.

Why drying matters

Dry vegetables: Excess water on the surface can create steam in the oven and make browning harder. Pat the washed vegetables dry before cutting or mixing them with the oil.

Coat evenly: Tossing the vegetables in oil before adding the seasonings helps the herbs and spices cling. Use a large bowl so the pieces can be turned without spilling.

Give the tray room

Single layer: Spread the vegetables out rather than piling them up. When pieces touch too closely, they tend to soften in their own moisture instead of developing browned edges.

Two trays: If one tray is crowded, divide the vegetables between two. Swap the trays’ oven positions at the halfway stir so they cook more evenly.

Check texture, not just time

Sweet potatoes: They are ready when a fork slips into the centre easily and the edges show some caramelisation.

Broccoli and peppers: Look for tender-crisp pieces and a few browned spots. Begin checking at 35 minutes, as vegetable size and oven performance affect the final timing.

Herbs, garlic and optional cheese

Rosemary and thyme: These dried herbs give the vegetables a savoury, aromatic flavour. Lightly crushing the rosemary between your fingers releases its aroma before it goes into the bowl.

Cheese: Feta or goat’s cheese is optional. Add it for only the final 5–7 minutes so it softens without obscuring the roasted vegetables.

Fresh herbs: Parsley or coriander added after roasting gives the tray a fresh finish.

Serving the bake

Serve it warm as a side or as the vegetable centre of a meal. For a more substantial plate, pair it with a source of protein such as beans, lentils, eggs or grilled chicken.

The sweet potatoes are filling, while the browned edges and mix of vegetables make the dish well suited to serving straight from the tray.

Recipe notes & tips

• Dry the vegetables well after washing to help them roast rather than steam.
• Keep the broccoli florets medium-sized so they do not brown too quickly.
• Use two trays if the vegetables will not fit in a single layer.
• Toss the vegetables at around 20 minutes to encourage even browning.
• Start checking the sweet potatoes at 35 minutes, especially if your pieces are smaller than stated.
• Add optional cheese only for the final 5–7 minutes of roasting.

Variations

• Add chickpeas: Toss drained chickpeas with the vegetables before roasting for a more substantial tray.
• Use different herbs: Swap the rosemary and thyme for dried oregano for a different herbal flavour.
• Make it spicier: Add a pinch of chilli flakes with the other seasonings.
• Finish with lemon: Squeeze lemon juice over the vegetables just before serving for a sharper finish.
• Try another cheese: Use crumbled feta or goat’s cheese as the optional finishing addition.

Common mistakes to avoid

• Crowding the tray: The vegetables can steam rather than brown; spread them across two trays if needed.
• Wet vegetables: Surface moisture can inhibit browning; dry them thoroughly before adding the oil.
• Uneven pieces: Different-sized pieces cook at different rates; cut the vegetables to similar sizes.
• Tiny broccoli florets: They may burn before the sweet potatoes soften; keep them medium-sized.
• Skipping the halfway stir: Some pieces may brown unevenly; stir at about 20 minutes and swap tray positions if using two.
• Adding cheese too early: It may soften too much during the long roast; add it only for the final 5–7 minutes.

How to store

Cool leftovers and store them in an airtight container in the fridge for up to 3 days. Reheat in the oven until hot, or warm in a microwave; the vegetables will be softer after reheating.

Frequently asked questions