Prepare the Croissants:
Slice the croissants into 1-inch thick strips or cubes, depending on your preference for beignet shapes.

Heat the Oil:
In a deep frying pan or Dutch oven, heat the vegetable oil over medium heat. The oil should be around 350°F (175°C). If you don’t have a thermometer, you can test the oil by dropping in a small piece of dough—if it sizzles immediately, the oil is ready.

Fry the Croissant Pieces:
Carefully add the sliced croissant pieces into the hot oil in batches. Fry for about 2-3 minutes on each side, or until golden brown and crispy. Don’t overcrowd the pan to ensure the beignets fry evenly.

Drain the Beignets:
Once the croissant pieces are golden and crispy, use a slotted spoon to remove them from the oil and place them on a plate lined with paper towels to drain any excess oil.

Dust with Powdered Sugar:
While the beignets are still warm, generously dust them with powdered sugar. For an extra touch, you can mix in cinnamon with the powdered sugar for a spiced flavor.

Serve & Enjoy:
Serve the fried croissant beignets immediately. You can drizzle them with a little milk or vanilla glaze for extra sweetness, but they are perfect on their own too.