Mashed potatoes is a total comfort food, and also a staple dish at many holiday meals. A knish upgrades everyone’s favorite side dish into its sophisticated cousin by stuffing it into a crusty outside. 

Go outside the expected, and welcome Autumn by swapping the original flaky dough with my colourful antioxidant-rich sweet potato crust.

It’s pretty, the colours contrast wonderfully when sliced, and man, this tastes great!

This recipe does take a bit of time to make (there’s making the dough, and the filling, plus assembling it), but it’s always super popular, so I only make it for Fall special occasions! 

Assembling mashed potatoes on dough

Microwaving the sweet potato instead of boiling it can cut down on some time. Depending on the size of your potato, it can be ready in 4 minutes to 16 minutes. Peel it after microwaving, and it’s so much easier – the peel just slips off! 


Raw knishes before egg wash

Save the water used for boiling the other potatoes, and use it to make super smooth and creamy mashed potatoes


Sweet Potato Crusted Potato Knish
Prep Time
30 mins
Cook Time
1 hr
Total Time
1 hr 30 mins

A festive remake of a classic potato knish

Course: Appetizer, Side Dish
Cuisine: American, holiday
Keyword: dinner ideas, gluten free recipes, healthy recipes,, recipes
  • 3 1/2 - 4 cups flour
  • 1 medium-large sweet potato
  • 1/4 cup oil
  • 1 cup warm water
  • 1 tsp salt
  • 1/2 bunch leeks chopped
  • 1 small onion chopped
  • 5 small potatoes
  • salt & pepper to taste
  • 1 egg- optional for glaze
For the dough:
  1. Microwave or boil sweet potato until completely soft
  2. Peel and mash sweet potato until smooth
  3. Combine all dough ingredients and set aside
For the filling:
  1. Boil potatoes until soft, save the water for later

  2. Sautee chopped leeks and onion
  3. Mash potatoes well and combine all ingredients
  4. Add in reserved potato water to reach the smooth consistency of mashed potato you prefer
To assemble:
  1. Preheat oven to 350° F
  2. Divide dough in 2 equal portions, plus about 1/8th to use for decoration
  3. Roll dough into a ¼ inch thick rectangle
  4. Spread filling in the centre of the dough, and fold dough over, so sides overlap
  5. Place seam-side down on baking tray
  6. Repeat with second half of dough
  7. Form a crisscross pattern using reserved dough

  8. Brush with egg wash if using

Recipe Notes

Dough can be made 1-2 days in advance. Mashed potatoes can be frozen. Defrost fully, and add oil and/or starchy water until desired fluffiness is reached. 

What occasion will you make this for?