Place the ricotta in a fine meshed sieve or colander lined with cheesecloth over a bowl and refrigerate for a minimum of one hour (up to 2 hours) to drain excess liquid.
Preheat oven to 350 degrees F and line 2 baking sheets with parchment paper.
Place drained ricotta, sugar and egg in a medium sized bowl. Whisk together until smooth.
Whisk in the melted butter until smooth.
Stir in the grated zest of 1 lemon.
Stir together 1 1/4 cups flour, baking powder and salt in a small bowl. Use a wooden spoon to combine the dry ingredients with the ricotta mixture until you have a shaggy dough.
Turn out the dough onto a lightly floured surface and, using a light hand, knead until you have a smooth dough. Shape into a ball. If necessary, add a spoonful of flour at a time as needed to form a dough that is not sticky.
Do not knead the dough vigourously as it will become increasingly moist and sticky and you want to avoid adding too much flour.
Divide the dough into 12 equal pieces, approximately 45 grams each. You may eyeball it rather than use a kitchen scale.
Roll each piece of dough on your lightly floured work surface into a 6 inch rope. Pinch the ends together lightly, they will not unravel during baking, and place on the prepared baking sheets.
Continue with the remaining pieces of dough.
Bake for 15-18 minutes until golden brown both on top and underneath. .
Transfer to a wire rack and let cool before dusting with powdered sugar and serving