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Vegan Burger & Onion Bake

 Vegan burger & onion bake is a super simple sheet pan dinner. Vegan burgers are roasted with vegetables then topped with a tasty sauce and cheese.

Vegan Burger & Onion Bake

Vegan Burger & Onion Bake

This vegan burger and onion bake is super easy to make and oh boy did we enjoy it.

I started by parboiling some baby potatoes to get them started, but apart from that, everything was cooked in the oven on a sheet pan.

It's just delicious. 

I don't know why I didn't think of it before.

What type of vegan burgers to use in a bake?

This is not the type of dish where you use a bean burger or vegetable burger.

You are looking for a soya style of burger, that looks more like a traditional burger.

We've tried a few different types but decided we prefered the Green Cuisine Meat-Free Burgers, which are made with pea protein and include no artificial colours or flavours.

And no I don't work with them, but I thought you might ask which burgers I use.

vegan burger & onion bake plated up on a white plate

An Easy Vegan Sunday Roast

If you are looking for a super easy vegan Sunday roast, this is a good option.

It is much less work than a normal roast as the veg all cooks together and you still get your little roast potatoes.

A roast usually comes with gravy, but this one includes a thick layer of sauce on the cooked burgers, so you just don't need it.

It's nice to taste the smoky flavour of the roast vegetables and not have them swamped with gravy.

What You Need to Make a Vegan Burger & Onion Bake


  • Pot - to pre-boil the potatoes
  • Sheet Pan - if you don't have a sheet pan you can use a roasting pan or baking tray, or even two if your tray isn't big enough


  • Vegan Burgers - soya or pat protein burgers work well for this bake
  • Onions - white onions
  • Red Peppers - yellow or orange bell peppers would work well too
  • Mushrooms - any standard mushrooms (not wild mushrooms)
  • Baby Potatoes - you could use any potatoes you have, just chop bigger potatoes into smaller chunks
  • Olive Oil - just a drizzle
  • Salt & Pepper - to season
  • Tomato Sauce - loaded onto the cooked burgers
  • Vegan Cheese - grated cheddar or smoked cheese

Which Type of Tomato Sauce?

I used jarred tomato sauce for this bake, but you could make your own sauce.

This simple tomato and basil pasta sauce would be delicious on the burgers.

Supermarket own-brand tomato and chilli pasta sauce was my choice for this bake.

If you are buying jarred sauce, look for one that's quick thick and not an oily sauce. 

Leftover sauce can be used to make homemade pizza on naan bread, pitta bread or bagels. You could also keep it for a quick pasta or adding to a toastie.

Which Type of Vegan Cheese?

Use your favourite vegan cheese (or whichever cheese you love) for this bake.

Vegan smoked applewood cheese is a good option for this bake as it melts really well.

I used up what I had, so used two different kinds of cheese.

If your favourite vegan cheese doesn't melt well, a wee tip is to mix a little cream cheese into the cheese before spooning it over the sauce.

Vegan burger and onion Sunday roast

How to Serve Vegan Burger & Onion Bake

Here are some ideas for serving this bake:

  • JUST SERVE IT UP - Just serve it as it is
  • EXTRA VEG - Serve it with some green veg, broccoli and mangetout would be good
  • BURGER BUN - Serve your topped burger on a bun with the veg on the side

How to Tweak this Recipe

You can make a few tweaks to this recipe:

  • VEG SWAP - change up the veg, think of all the veg that tastes so good roasted - carrots, butternut squash, sweet potatoes, aubergine, courgettes ............
  • PULSES - why not add chickpeas to the bake
  • BBQ SAUCE  - swap the tomato sauce for BBQ sauce and skip the cheese

close up of vegan burger and onion bake

More Easy Vegan Savoury Traybakes

Here are a few more easy vegan traybakes for you to try:


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Vegan burger onion bake is a super simple one-tray meal. Vegan burgers are roasted with vegetables before they are topped with a tasty sauce and cheese, then popped back in the oven to finish off.

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How to Make Vegan Burger & Onion Bake

Scroll down for step-by-step photos followed by a full printable recipe. If you don't have a printer, hit print then save as a PDF.

Vegan Burger & Onion Bake - Step 1


  • Cut the baby potatoes in half and parboil them in a pan with boiling, salted water.
  • Preheat the oven.
  • Place burgers on a sheet pan, or baking tray and add a layer of sliced onions.
  • Next add sliced peppers.

Vegan Burger & Onion Bake - Step 2


  • Add sliced mushrooms and then the parboiled potatoes. Try to keep everything in a single layer as much as possible.
  • Drizzle with olive oil and season with salt and pepper.
  • Roast in the oven until the burgers are cooked, remove from the oven and top the burgers wirth tomato pasta sauce.

Vegan Burger & Onion Bake - Step 3


  • Add grated cheese to the sauce topped burgers, then pop the tray back in the oven until the cheese has melted and the potatoes have a nice roasted skin.
  • Serve and enjoy!

burger bake, savoury tray bake, Vegan sheet pan dinner, Vegan burger bake, vegan roast dinner, vegan Sunday roast
British, vegan
Yield: 2 (large portions or 4 small)
Author: Jacqueline Meldrum
Vegan Burger & Onion Bake

Vegan Burger & Onion Bake

A simple vegan burger & onion bake with extra veg. A whole meal cooked on one tray. Simply delicious.
Prep time: 10 MinCook time: 45 MinTotal time: 55 Min


  • 12 baby potatoes, halved
  • 4 vegan burgers (soya based or pea protein style work well)
  • 2 large onions, sliced
  • 1 red pepper, sliced
  • 4 mushrooms sliced
  • 8 tablespoons tomato pasta sauce
  • 8 tablespoons grated vegan cheddar
  • 1 tbsp olive oil
  • salt and pepper


  1. Parboil the halved baby potatoes in a pot with boiling, salted water for 10-15 minutes until starting to become tender but not soft.
  2. Prep your veg.
  3. Preheat your oven to 180c/160c fan/350f/gas mark 4.
  4. Add your burgers to a sheet pan, baking tray (or two) or roasting tin.
  5. Add a layer of sliced onions, then add sliced peppers and mushrooms. 
  6. Now add the drained, parboiled potatoes. Try to keep everything in a single layer as much as possible.
  7. Drizzle with olive oil and season with salt and pepper.
  8. Pop in the oven to roast for 20-25 minutes until the burgers are well cooked.
  9. Top the burgers with a thick layer of tomato pasta sauce, then grated cheddar and pop the tray back into the oven to roast for another 10-15 minutes until the cheese is melted and the potatoes have nice roasty skins.
  10. Serve and enjoy!


  1. You can easily add more burgers and veg to serve more people.
  2. Why not sprinkle some dried herbs over the cheese and vegetables for the last bake.
  3. You can use jarred tomato sauce (I used a tomato and chilli sauce), but look for one that is thick and not oily.
  4. You could also make a fresh tomato and basil sauce.
  5. This bake doesn't work well with vegetable or bean burgers.
  6. Why not serve the topped burgers on burger buns and the veg on the side?

Nutrition Facts



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  1. This looks absolutely delicious! Can't wait to make this. :)

  2. This one pan dinner looks delicious. I like that you add lots of veggies to it.

    1. You can add even more. It is super easy and tasty.

  3. Now that I'm incorporating more and more vegan dishes into my diet I'm always on the lookout for more delicious recipes and this one hits the spot. When I'm craving a burger, but know I want to eat something healthy this is my go to!

    1. lt's certainly a nice change from serving them on buns and extra veggies too.

  4. This looks so delicious, easy, and healthy. My family is just going to love this and I can feel good about cooking it for them. Thanks so much!

    1. It's the perfect family dish. A real kid friendly dish.

  5. This was such a unique and unexpected dish that did not disappoint! Easy, healthy and hands down delicious; loved all the bold flavors!

    1. I am so pleased you enjoyed it. I'm really pleased with it

  6. I cannot wait to try this. I have everything I need. Thnx Jayne

  7. I am going to try this burgers you suggested. I will let you know what I think.

    1. I hope you like them. They are the best we have tried. Mind you everyone is different.


I love reading comments, so thank you for taking the time to leave one. Unfortunately, I'm bombarded with spam, so I've turned on comment moderation. I'll publish your comments as soon as I can and respond to them. Don't panic, they will disappear when you hit publish. Jac x