01 - In a mixing bowl, beat the softened cream cheese, granulated sugar, vanilla extract, egg yolk, and salt together using an electric mixer or whisk until the mixture is completely smooth and creamy with no lumps remaining.
02 - Lay one egg roll wrapper flat on a clean work surface. Place approximately 1½ tablespoons of the cheesecake filling in the center of the wrapper.
03 - Fold the bottom corner up and over the filling, then fold both side corners inward. Roll tightly toward the top corner, sealing the final edge with a light brush of water. Repeat with the remaining wrappers and filling.
04 - Pour vegetable oil into a deep pan or heavy-bottomed pot to a depth of 2 inches. Heat over medium-high heat until the oil reaches 350°F. Use a thermometer to monitor the temperature.
05 - Carefully lower the egg rolls into the hot oil in small batches of 3 to 4. Fry for 2 to 3 minutes, turning occasionally, until all sides are golden brown and crispy. Remove with a slotted spoon and transfer to a paper towel-lined plate to drain excess oil.
06 - Dust the warm egg rolls generously with powdered sugar. Serve immediately alongside chocolate or strawberry dipping sauce.