The Edgy Veg

thanksgiving leftover burger

Vegan Thanksgiving Leftover Sandwich Recipe

I wanted to share my vegan thanksgiving leftover recipes with you starting with my thanksgiving leftover sandwich!

This creation can be made using classic vegan Thanksgiving leftovers like mashed potatoes, gravy, cranberry sauce and slices of your leftover holiday roast. I reheated my vegan turkey cutlets on the barbeque for a delicious grilled taste, but you can heat up your slices however you want.

Related Article: Vegan Thanksgiving Leftovers Ideas

thanksgiving leftover recipesEvery Thanksgiving I end up cooking enough food for a crowd and ending up with tons of leftovers, and there’s only so many times you can eat reheated plates of the same things.

This year, with even fewer people at my table and more leftover containers in my fridge than I know what to do with, I’m spicing things up with a Thanksgiving Leftovers Burger. 

Thanksgiving Leftover SandwichThanksgiving Leftover Sandwich

This simple thanksgiving creation is a fun way to use up leftover dishes with a twist. In only 10 minutes, you can turn sad containers into a restaurant-quality burger.

You can add your mashed potatoes right onto the burger, but for this recipe, I’m going to show you how to turn them into hashbrowns or “round croquettes’ as a layer to the thanksgiving leftover sandwich.


Optional: If you want to turn your mashed potatoes into fried hashbrowns or round croquettes, you’ll also need:


Thanksgiving Leftover Sandwich Recipe


Related Recipe: Best Vegan Thanksgiving Recipes

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Vegan Thanksgiving Leftover "Sandwich"
Prep time
Cook time
Total time
I wanted to share my thanksgiving leftover recipes with you starting with my thanksgiving leftover sandwich! These simple Thanksgiving leftover sandwiches are a fun way to use up leftover dishes with a twist. In only 10 minutes, you can turn sad containers into a gourmet sandwich.
Recipe type: Main
Cuisine: Vegan
Serves: 4 Sandwiches
If you want to fry your mashed potatoes into a hashbrowns for your sandwich use:
  1. You can use leftover mashed potatoes on your burger, or fry them into a hashbrown layer or round croquettes and I'll tell you how to make them. If you just want to make a simple thanksgiving leftover sandwich in 1 mins, just heat and combine all your leftovers into a sandwich.
  2. To make the hashbrown / croquette, add mashed potatoes to a large bowl. Then add flour, baking powder, garlic powder, and salt, and mix together until well combined. You can start with ½ cup flour and see if you need more flour based on how big your mashed potato portion is.
  3. Prep a lipped baking sheet with a wire cooling rack and place it next to your stove. If you do not own a wire cooling rack (you should get one lol) for excess oil/moisture to drip then you can use a plate & paper towel, but it won't result as crispy so definitely recommend wire cooling rack.
  4. Heat about 1 cup of oil (about ¼ depth) in a pan over medium-high heat. Test the oil by adding a bit of the potato mixture-- it should sizzle right away.
  5. Using a ¼ cup measuring cup or an ice cream scoop, flatten and form the dough into discs with your fingers.
  6. Cook them in the oil until nicely browned and crispy, about 3-4 mins, flip and cook for another 3-4 mins, or until the second side is also nicely browned and crispy. Allow excess oil to drip off into the pan, and place cooked hasbrowns/croquettes onto a wire cooling rack, and repeat with the remaining potato mixture.
  7. Preheat pan/grill/BBQ to medium-high to heat up your leftover thanksgiving protein.
  8. Brush with oil and place the protein onto your grill or pan and cook until heated about 2 mins per side.
  9. Toast your sandwich slices or buns
  10. Spread some cranberry sauce on the bottom of each bun, and place the grilled protein.
  11. On top of that, stack your mashed potato patty, and drizzle with gravy. Add the top bun and serve leftover sides or repurposed leftover sides like my cranberry-glazed veggie skewers.

Hey I’m Candice aka The Edgy Veg – I veganize popular food recipes for vegans, plant-based diets, eco-conscious eaters & people who are trying to eat more plants over… y’know animals or their by-products. I hope you enjoy this tasty vegan recipe!

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Made this recipe? Let me know what you think by leaving a ★★★★★ star rating & comment below. It truly helps me & I really appreciate any support! Feel free to share your food photos on social and tag me @edgyveg so I don’t miss it!

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  • We had thanksgiving last night so when I saw your Instagram post about using leftovers I went to your blog post and totally made this using leftover mashed potatoes, cranberry sauce, gravy, vegan roast slices and added a layer of vegan cheese 😉 it was so good! Didn’t make the hash brown because I was too lazy but definitely will next time I make mashed potatoes


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