- 6 ounce parmesan, shredded
- 3 ounce cheddar, shredded
- 2 teaspoon onion powder
- 1 teaspoon paprika
- 1 teaspoon coarsely ground black pepper
- 4 cup flour, plus more for dusting
- 1 tablespoon salt
- 1/4 teaspoon baking powder
- 1/2 cup milk, plus more as needed
- 1/2 cup buttermilk
- 1 stick (4 tablespoons) butter, melted, cooled
- 2 whole eggs, beaten with a tablespoon of water, for egg wash
- Pulse all the ingredients in a food processor until coarsely but evenly ground. If not using right away, cover and refrigerator up to 1 week.
- Combine flour, salt and baking powder in the bowl of a stand mixer fitted with a dough hook.
- Mix on low to combine ingredients, about 1 minute.
- Combine ½ cup milk, the buttermilk and melted butter in a separate bowl.
- Turn off mixer; add liquid ingredients.
- Mix on low to combine, scraping sides as needed, about 2 minutes.
- Increase to second speed, and mix until just combined, about 1 minute.
- If dough does not come together, add more milk, 1 tablespoon at a time.
- Remove dough from bowl, divide into 4 pieces and roll into balls.
- Wrap in plastic wrap; allow dough to rest, 30 minutes.
- Unwrap one dough ball and place on the counter.
- Flatten with a rolling pin or the palm of your hand to a thickness of less than an inch; divide it into 2 pieces of relatively even size.
- Pass one piece of dough through a pasta roller on its widest setting. Be patient, as the dough may still be pretty stiff.
- Letter fold the dough (fold one side one-third over, then do the same with the other side); rotate dough 90 degrees and pass it through the pasta roller again to make smoother sides. If dough is sticking, dust lightly with flour between rolls.
- Continue rolling at increasingly smaller settings until dough is very thin, 1 or 2 settings before the smallest setting. (Different pasta machines have different numbering systems.)
- Lay the rolled dough onto a parchment-covered cookie sheet.
- Repeat with remaining dough.
- When dough strips are on cookie sheets, dock them heavily with a fork, then brush with egg wash.
- Sprinkle evenly with the cheese topping.
- Cut into triangles with a pizza cutter.
- Bake in a 375-degree oven until brown and crisp, 12 to 15 minutes.
- Cool to room temperature and serve.