Stir blueberries, 3 tbsp sugar, and lemon juice in a small saucepan.
Whisk cornstarch with 2 tbsp water, then stir into the pan. Simmer until thick, 3–5 minutes. Cool completely.
Beat cream cheese, 1/4 cup sugar, vanilla, and lemon zest in a bowl until smooth and fluffy.
Heat oil in a deep pot to 350°F. Set a rack or paper towels nearby.
Lay a wrapper diamond-side up. Spread 1 tbsp cheesecake filling and 1 tbsp blueberry filling near the center.
Brush edges with water. Fold bottom up, tuck sides in, and roll tightly to seal. Repeat with remaining wrappers.
Fry rolls in batches until deeply golden, about 2–3 minutes, turning once. Do not crowd the pot.
Drain briefly on the rack. Dust with powdered sugar and serve warm.
Notes
Try baking or air-frying: Brush rolls lightly with oil and bake at 400°F for 12–15 minutes, or air-fry at 375°F for 7–9 minutes, until crisp. For a fun twist, add a pinch of cinnamon to the cheesecake filling or drizzle with lemon glaze. Leftovers keep 1–2 days in the fridge; re-crisp in a hot oven for a few minutes.This recipe is an original creation inspired by classic Easy Blueberry Cheesecake Egg Rolls flavors. All ingredient ratios and instructions are independently developed.