Combine all ingredients in a large bowl; use an immersion blender (or whisk) to mix the crepe batter well. Make sure there are no lumps in the batter.
Heat some butter in a small nonstick pan over medium heat.
Ladle about 3-4 tablespoons of crepe batter into the hot skillet. Tilt the pan clockwise to allow the batter to spread evenly over the bottom of the skillet. Cook for 30-60 seconds per side; flip and cook for 10 seconds, then remove from the skillet. Side Note: Flipping them over is optional.
Spread some lemon curd over the bottom of the crepe, then roll.
Sprinkle the top with raspberries and powdered sugar.