Coney Island Knishes – St. Patrick’s Day Leftovers Edition

One of my earliest “exotic” food experiences was eating potato knishes with my Dad when we’d visit Coney Island. There were the square variety, and we’d buy them from a hot dog cart, and since potatoes were my favorite food growing up, I was in heaven. I mean, mashed potatoes in a warm, flaky pastry? I’ll have two, please.

Back then they were still made with copious amounts of chicken fat, also know as “schmaltz,” which was the real secret behind their awesomeness, but you can make a perfectly fine version without that, especially if you have some leftover corned beef around. Regardless of how you fill these, the technique seen herein will work, and half the fun is trying new versions. As long as the base is mashed potato, spiked with onions fried in lots of fat, anything goes.

I think the baked version is the easiest, but if you feel so inclined, these can also be deep-fried, or pan-fried. No matter how you cook them, one of the keys is getting the dough nice and thin, so your finished product is mostly filling. Other than that, these are relatively simple to make, and the kind of snack that fills more than just an empty stomach, which is why I really hope you give these a try soon. Enjoy!

Ingredients for 16 Knishes:

(Please Note: I only used half the dough in the video, and only made enough filling for 8 knishes, but the following ingredients will make 16 total)

For the dough:

2 3/4 cups all-purpose flour, plus more as needed

1 teaspoon kosher salt (or 1/2 teaspoon fine salt)

1 teaspoon baking powder

1 large egg, beaten

1 teaspoon white vinegar

1/2 cup canola oil

1/2 cup warm water

For the filling (might make extra):

2 1/2 pounds russet potatoes, peeled, quartered, and boiled in salted water until tender

1/2 cup melted butter, and/or rendered chicken fat

2 cups diced yellow onion