Prep time: 10 minutes
Cooking time: about 20 minutes
1. Heat the oven to 425 degrees. Divide the butter between two 8-inch round cake pans, and put in the oven to melt. Meanwhile, mix eggs, milk, and flour in a blender or by hand until batter is smooth.
2. Remove pans from oven and pour half the batter into each pan. Return pans to oven and bake for 15 to 20 minutes, until pancakes are very puffy, firm, and golden-brown on edges.
3. Squeeze lemon over pancakes, sprinkle with powdered sugar, and serve.