Instructions

1. Finely grate the zest from 1 small lemon into a medium saucepan until you have about 1 teaspoon. Cut the lemon into quarters, then squeeze the juice from 1 quarter into the saucepan (about 1 teaspoon). Reserve the remaining lemon quarters for the filling.
2. Place 1/4 cup of the cold water and 1 tablespoon cornstarch in a small bowl and stir until the cornstarch is dissolved. Add the cornstarch mixture, 1 cup of the blueberries, 1/2 cup granulated sugar, remaining 1/4 cup cold water, and 1/4 teaspoon kosher salt. Bring the mixture to a boil over medium heat, stirring constantly. Let the mixture boil until thickened and the blueberries release their juices, about 3 minutes. Add the remaining 1 cup of blueberries and cook for 2 minutes more. Remove the pan from the heat.
3. Melt 1 tablespoon unsalted butter and place in a medium bowl. When cool, squeeze the juice from a lemon quarter into the bowl (about 1 teaspoon). Add 2 cups farmer cheese, 1 large egg yolk, 2 tablespoons granulated sugar, 1/2 teaspoon vanilla extract, and 1/4 teaspoon kosher salt, and stir to combine. Cover and refrigerate while making the pancakes.
4. Line a baking sheet with parchment paper. Place 3 large eggs, 1 cup whole milk, 3/4 cup all-purpose flour, 2 tablespoons vegetable oil, and 1/2 teaspoon kosher salt in a medium bowl and whisk until smooth with little to no lumps.
5. Heat a small amount of butter or oil in a 6-inch nonstick frying pan over medium-low heat until melted or shimmering. Pour in about 3 tablespoons of the batter and immediately tilt the pan in a circular motion to spread the batter evenly and coat the bottom. Use just enough batter to make a very thin pancake. Cook until the bottom is lightly browned and the top is set, about 2 minutes. Lift the pancake from the pan and place on the baking sheet, browned side up. Repeat making the remaining pancakes.
6. To fill, place a pancake browned-side up on a work surface, then spoon about 3 tablespoons of the filling along one side of the pancake. Fold the opposite sides in and roll up like a burrito. Repeat with the remaining pancakes and filling.
7. In the same pan over medium heat, lightly pan fry the rolled cheese blintzes in butter or oil until lightly browned on both sides (start seam-side down), about 1 minute per side.
8. Rewarm blueberry sauce over medium-low heat if needed. Spoon the warm blueberry sauce over the fried cheese blintzes. Dust with powdered sugar and serve immediately.