2 1/2 cups shredded cheddar cheese, 8 ounces in weight
  8 tablespoons butter, at room temperature
  1/4 cup grated parmesan cheese
  1 1/2 teaspoons garlic salt
  1/2 teaspoon onion powder
  1 tablespoon dried parsley
  1 cup all-purpose flour
  1 tablespoon ice water

Directions

1. Add your butter, shredded cheese, grated cheese, garlic salt onion powder and dried parsley to your bowl.
2. Mix together, or pulse if you're using a food processor, until the ingredients are thoroughly mixed together.
3. Sprinkle flour evenly on top and mix together until combined.
4. Pour in 1 tablespoon of ice water and stir. You'll want the mixture to form a ball and pull away from the bowl. Add more ice water if you need to in very small amounts just until you can form a ball that holds together.
5. Wrap your dough in plastic wrap and refrigerate for at least one hour. The dough needs to be chilled all the way through. You can put it in the freezer for 15 minutes until it's chilled but not frozen.
6. Preheat your oven to 375 degrees F.
7. Grab two baking sheets and line with parchment paper or silicone mats.
8. Now unwrap the dough and divide into two equal parts.
9. Roll out one part until the dough is about 1/8 of an inch thick.
10. Cut into squares using a ravioli cutter, pizza cutter or similar tool. You can even use a knife.
11. Bake for 13-15 minutes. You'll want them to be golden brown and after they cool, they'll be a little crispy.