Preheat your oven to 400°F (200°C) and prepare a baking sheet with parchment paper.

Sauté the chopped onion and minced garlic in a skillet over medium heat for about 5 minutes.

Add the ground sausage into the skillet and cook until browned, breaking it into small pieces.

Roll out the puff pastry on a floured surface and cut it into 4-inch squares.

Spoon a generous amount of the sausage mixture onto each pastry square, fold and seal the edges.

Brush each roll with the beaten egg for a golden finish.

Bake the rolls in your preheated oven for 20-25 minutes until golden brown.