Blueberry Cheesecake Egg Rolls

Make blueberry sauce: In a small sauce pan over medium heat, combine blueberries, lemon juice, and sugar. Bring to a simmer and cook until thick and jammy, 5 to 7 minutes. Remove from heat and let cool slightly. Make cheesecake mixture: In a large bowl using a hand mixer, beat together cream cheese, sugar, sour cream, vanilla, and kosher salt until fully combined.  Place an egg roll wrapper on a clean surface in a diamond shape and spoon approximately 2 tablespoons cream cheese mixture into a line in the center. Top with a heaping spoonful of blueberry sauce. Fold up bottom half and tightly fold in sides. Gently roll, then seal fold with a couple drops of water.  In a large skillet over medium heat, pour enough oil to reach 1" up the side of skillet. Heat until oil starts to bubble when a drop of water is added. Add egg rolls and fry until golden, 1 minute per side. Transfer to a paper towel-lined plate to cool slightly. Dust with powdered sugar and serve.