01 - In a mixing bowl, combine the softened cream cheese, granulated sugar, vanilla extract, egg yolk, and salt. Beat with 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 with one corner pointing toward you. 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. Fold the left and right sides inward toward the center. Continue rolling tightly away from you. Lightly brush the top corner with water and press firmly to seal the edge. Repeat with all 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 candy or frying thermometer to monitor the temperature.
05 - Carefully lower the egg rolls into the hot oil in small batches of 3 to 4 at a time, turning occasionally. Fry for 2 to 3 minutes per batch until the wrappers are golden brown and crisp all over. Remove with a slotted spoon and transfer to a plate lined with paper towels to drain excess oil.
06 - Allow the egg rolls to cool slightly, then dust generously with powdered sugar. Serve warm alongside chocolate sauce or strawberry sauce for dipping.