01 - Preheat oven to 375°F. Line a baking sheet with parchment paper.
02 - Unroll crescent roll dough and separate into 8 individual triangles.
03 - Combine mozzarella, cheddar, and Parmesan cheeses in a small bowl.
04 - Place approximately 2 tablespoons of cheese mixture at the wide end of each triangle.
05 - Roll each triangle from wide end to tip, enclosing the cheese filling completely.
06 - Place rollups on prepared baking sheet with tips tucked underneath to secure.
07 - Whisk together melted butter, minced garlic, parsley, and salt until well combined.
08 - Generously brush each rollup with the garlic butter mixture.
09 - Bake for 15-18 minutes until golden brown and cheese is bubbly.
10 - Brush with remaining garlic butter if desired. Serve warm.