If you can’t choose between this and the spicy pizza version, just make them both. A piroshki party is a very cool thing. The fillings are no-cook and the dough doesn’t require a second rise after shaping, so there’s really no excuse. Aggressively wringing out moisture from the frozen spinach will ensure your piroshki are melty-cheesy, not sad-soggy.
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What you’ll need
High Heat Thermometer
$10 At Amazon
Stand Mixer
$330 $250 At Amazon
Cast Iron Skillet
$30 At Amazon
Box Grater
$12 $9 At Amazon
Rimmed Baking Sheet
$30 At Amazon
Wire Cooling Rack
$18 At Amazon
Recipe information
Total Time
1 hour (plus rising)
Yield
Makes 8
Ingredients
Dough
1
⅔
2
2
1½
2
1
Filling and Assembly
1
6
6
½
1
Special Equipment
Preparation
Dough
Step 1
Whisk together 1 large egg, room temperature, ⅔ cup (150 g) sour cream, 2 tsp. instant yeast, 2 tsp. sugar, and 1½ tsp. Diamond Crystal or 1 tsp. Morton kosher salt in the bowl of a stand mixer. Fit mixer with the dough hook. Add 2 cups (250 g) all-purpose flour and mix on medium-low speed until a smooth, slightly tacky dough comes together, 5–8 minutes.
Step 2
Remove bowl from mixer and drizzle dough with 1 tsp. vegetable oil; turn to coat. Cover with a large plate or plastic wrap and let sit in a warm, draft-free spot until dough is doubled in size, about 2 hours.
Filling and Assembly
Step 3
Mix one 10-oz. package frozen spinach, thawed, squeezed dry, 6 oz. low-moisture mozzarella, coarsely grated (about 1½ cups), 6 scallions, thinly sliced (about 1 cup), ½ cup frozen corn kernels, thawed, drained, and 1 tsp. Diamond Crystal or ½ tsp. Morton kosher salt in a medium bowl to combine.
Step 4
Divide dough into 8 equal pieces on a clean surface (don’t flour); cover loosely with plastic wrap. Working with 1 piece at a time and keeping remaining pieces covered, press dough into a 5"-diameter round with your fingers. Place 2 Tbsp. filling in a line down the center of dough. Fold dough up and over filling to make a half-moon shape (dough is forgiving and should stretch easily) and press edges together firmly to seal, pushing any filling away from edges. Stand piroshki, seam side up, and gently pat down until vaguely football-shaped. Transfer, seam side down, to a parchment-lined baking sheet (no need to cover). Repeat process with remaining dough and filling, working quickly to prevent dough from rising too much.
Step 5
Pour vegetable oil into a medium heavy skillet, preferably cast iron, to come ½" up sides; fit with thermometer. Heat over medium until oil registers 350°. Fry piroshki in batches of 2 or 3, turning occasionally with tongs and adjusting heat as needed to maintain temperature, until slightly puffed and golden brown, about 5 minutes. Transfer to a wire rack set inside another rimmed baking sheet.
Step 6
Transfer piroshki to a platter and serve warm.