In a large glass, dissolve yeast and 1 teaspoon sugar with 3/4 cup warm water at a temperature around 100 degrees Fahrenheit.
Stir the yeast and sugar into the water with a fork.
Let the mixture rest to froth for 10 minutes.
After 10 minutes of sitting the yeast mixture will therefore be frothy.
In a large bowl, sift together the 2 cups flour, 1 tsp salt, 1/8 tsp baking powder, and remaining 1 teaspoon sugar, then set bowl aside.
Add 3 Tbsp Greek yogurt and 2 Tbsp oil into the glass and then stir with a fork to combine.
Pour the yogurt mixture into the large bowl with the dry ingredients and then stir with a fork until the liquids are just combined into the dry ingredients.
When the liquid is absorbed, scrape extra off fork and gently knead the dough with your fingers until a soft dough ball forms, making sure to not over knead!
Cover the bowl with a lid or plastic wrap and then let the dough rest for 2-4 hours on a countertop.
When you are ready to roll your Naan, get two bowls: one with 1/4 cup flour and one with 1/2 cup water.
On a clean counter, dust flour on your prep surface and then turn out your dough onto floured surface as the dough will be sticky!
Using a pizza/pasta cutter or a bench scraper, cut your dough into six equal pieces and roll each in the flour bowl so they do not stick together, then set each aside.
To shape the naan, use a floured rolling pin and gently roll each into a teardrop shape making them narrower at one end than the other.
Roll out all six pieces around 8 to 9-inches long and around 1/4-inch thick.
Then, warm a cast iron skillet or a griddle on high.
Dampen your hands in the water bowl and then carefully pick up a piece of naan, flip-flopping it from one hand to the next to get each side damp.
Then, gently lay it on the hot skillet, wet-side-down.
Cook for 1 minute then flip the naan, when done it should look blistered and have blackened spots which is typical of Naan.
Repeat with all of the dough pieces until they are all cooked.
If desired, brush cooked naan with melted butter and then sprinkle with course sea salt.
Place the naan on a plate lined with a towel to keep warm until serving.