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 1 1/2 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 toward the center. Roll tightly toward the top corner, sealing the final edge with a light brush of water. Repeat with all remaining wrappers and filling.
04 - Pour vegetable oil to a depth of 2 inches into a deep heavy-bottomed pan or fryer. 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 batches of 3 to 4, turning occasionally, until all sides are golden brown and crispy, approximately 2 to 3 minutes per batch. Transfer each batch to a paper towel-lined plate to drain excess oil.
06 - Dust the warm egg rolls generously with powdered sugar and serve immediately with chocolate sauce or strawberry sauce on the side for dipping.