Activate the Yeast: In a small bowl, dissolve the sugar in warm milk. Sprinkle the yeast over the milk and let it sit for about 10 minutes, or until frothy.
Mix the Dry Ingredients: In a large mixing bowl, combine the flour, baking powder, and salt.
Make the Dough: Add the activated yeast mixture, yogurt, and oil to theflour mixture. Mix to combine and knead into a soft, elastic dough. If thedough is too sticky, add a little extra flour; if too dry, add a bit more milk.
First Rise: Place the dough in a greased bowl, cover with a damp cloth, and let itrise in a warm place for about 1 hour, or until it doubles in size.
Shape the Naan: Once risen, punch down the dough and divide it into 8equal parts. Roll each part into a ball and then flatten it into an oval shapeusing a rolling pin. Optionally, press some garlic or herbs onto the surfacefor extra flavor.
Cook the Naan: Heat a cast iron skillet or griddle over medium heat.Once hot, place the naan onto the skillet and cook until bubbles form on thesurface, then flip and cook until the other side is golden brown. Brush eachnaan with melted butter as they come off the skillet.
Repeat: Continue with the remaining dough balls, adjusting the heat as necessaryto prevent burning.