Preheat oven to 400°. Line 2 rimmed baking sheets with parchment paper.
Place 1 sheet phyllo dough on each prepared pan. Brush each with melted butter. Sprinkle each with about 2 tablespoons cheese and about ⅛ teaspoon pepper.
Top each with a second sheet of phyllo; brush each with melted butter, and sprinkle with cheese and pepper. Repeat procedure 3 more times. Cut each phyllo stack into 2-inch squares.
Bake until browned and crisp, 6 to 7 minutes. Let cool completely before serving.
Recipe by Southern Lady Magazine at https://southernladymagazine.com/spinach-and-arugula-salad-with-phyllo-croutons-recipe/