What size should I cut the sweet potatoes for this tray bake?

Cut the sweet potatoes into roughly 1.5 cm or ½–¾ inch cubes for even cooking. Smaller pieces roast faster and give you more caramelized edges, which is ideal in a Sweet Potato & Green Bean Tray Bake. For more ideas, check out our guide on Roasted Garlic Parmesan Green Beans.

How long does a Sweet Potato & Green Bean Tray Bake take to cook?

At 220°C / 425°F, you’ll usually need about 25–30 minutes total. Give the sweet potatoes a 15-minute head start, then add the green beans for the final 12–15 minutes until everything is tender and golden.

Can I use frozen green beans instead of fresh?

Yes, but thaw and pat them dry very well first to reduce extra moisture. Frozen beans will be slightly softer, so your Sweet Potato & Green Bean Tray Bake may lose some of the crispness but will still taste great.

Is this tray bake suitable for meal prep?

Absolutely, this Sweet Potato & Green Bean Tray Bake keeps well in the fridge for several days. Portion it into containers with grains or protein, and you have grab-and-go lunches ready to reheat.

Do I have to peel the sweet potatoes?

No, peeling is optional as long as you scrub them well. The skin adds extra fiber and a bit of texture, so it comes down to personal preference for your Sweet Potato & Green Bean Tray Bake.

Can I add meat or extra protein to this recipe?

Yes, sliced sausage, chicken thighs, or canned chickpeas work really well. Just adjust timing so any meat cooks through while the Sweet Potato & Green Bean Tray Bake stays pleasantly roasted, not dry.

Are sweet potatoes and regular potatoes interchangeable here?

You can swap in regular potatoes, but you’ll lose the natural sweetness and color contrast. If you mix both, your Sweet Potato & Green Bean Tray Bake gets a fun blend of flavors and textures.

Best Sweet Potato & Green Bean Tray Bake : 7 Proven Ways This Makes Dinners Effortless

Name: Best Sweet Potato & Green Bean Tray Bake
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: American
Ingredients: 2 medium sweet potatoes, peeled and cut into 1.5 cm (½–¾ inch) cubes; 300 g fresh green beans, trimmed and halved; 2–3 tbsp olive oil or avocado oil; 2 cloves garlic, minced (or 1 tsp garlic powder); 1 tsp smoked paprika (or regular paprika); ½ tsp dried thyme (or Italian seasoning); ½ tsp fine sea salt, plus more to taste; ¼ tsp freshly ground black pepper; Optional: 1 small red onion, sliced into wedges; Optional protein: 1 can chickpeas, drained and rinsed, or sliced chicken sausage; Optional finish: lemon wedges, crumbled feta, or toasted nuts/seeds

Best Sweet Potato & Green Bean Tray Bake

Print Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

No reviews

This Sweet Potato & Green Bean Tray Bake is an easy sheet-pan dinner or side with caramelized sweet potatoes and blistered green beans tossed in garlicky, smoky spices—simple, colorful, and delicious.

Author: Julia Monroe
Prep Time: 10 minutes
Cook Time: 30 minutes
Total Time: 40 minutes
Yield: 4 servings
Category: Side Dish
Method: Roasting
Cuisine: American
Diet: Vegan

Ingredients

Scale

2 medium sweet potatoes, peeled and cut into 1.5 cm (½–¾ inch) cubes

300 g fresh green beans, trimmed and halved

2–3 tbsp olive oil or avocado oil

2 cloves garlic, minced (or 1 tsp garlic powder)

1 tsp smoked paprika (or regular paprika)

½ tsp dried thyme (or Italian seasoning)

½ tsp fine sea salt, plus more to taste

¼ tsp freshly ground black pepper

Optional: 1 small red onion, sliced into wedges

Optional protein: 1 can chickpeas, drained and rinsed, or sliced chicken sausage

Optional finish: lemon wedges, crumbled feta, or toasted nuts/seeds

Cook Mode Prevent your screen from going dark

Instructions

1. Preheat oven to 220°C / 425°F. Lightly oil a large rimmed baking tray (skip parchment for best browning).

2. Add sweet potato cubes to the tray and toss with half the oil, half the salt, and half the spices. Spread into an even single layer.

3. Roast sweet potatoes for 15 minutes to give them a head start.

4. Meanwhile, toss green beans (and chickpeas or sausage if using) with remaining oil, remaining salt, pepper, garlic, and remaining spices.

5. Remove tray from oven. Add green bean mixture (and onion wedges if using) and toss gently. Spread back into a single layer.

6. Roast 12–15 minutes more, stirring once halfway, until beans are blistered and sweet potatoes are golden and fork-tender.

7. Finish with a squeeze of lemon and/or feta or crunchy nuts/seeds. Serve hot, straight from the tray.

Notes

For extra crisping, avoid overcrowding the pan—use two trays if needed.

If adding chickpeas, pat them dry first for better browning.

Keep it vegan by skipping feta and using chickpeas (or just vegetables).

Leftovers reheat best in the oven or air fryer to bring back the crisp edges.

Find it online: https://www.musttryrecipe.com/sweet-potato-green-bean-tray-bake/