In a small bowl, mix yeast and sugar in about 1/2 cup of water. Let it rest till the yeast starts bubbling.
In a large mixing bowl, combine spelt flour, refined wheat flour and salt.
Add grated pumpkin and kasuri methi. Mix everything.
Add the sugar and yeast mixture.
Add yoghurt.
Mix everything. Add water, as needed, to knead a semi-soft dough.
Cover and rest it till it doubles in size.
Now, knead it once more.
Divide the dough into 18 equal portions.
Roll them with a rolling pin to a circle about 10 cm in diameter.
This way, roll all the portions and place them on a baking tray lined with a baking sheet.
Brush water on the surface of each kulcha and sprinkle some crushed pumpkin seeds.
Now, let them rest in a warm place until they rise. This could take about 30-40 minutes.
Preheat the oven to 200 degrees C for 10 minutes.
Place the baking trays and bake the kulchas for 10 minutes.
Once baked, remove them from the oven and brush some ghee/butter.
Kulchas are ready to be served.
If you wish to store the kulchas, let them cool completely. Then, transfer them to a bread box and keep them at room temperature if you want to consume them on the same day. Else, keep the bread box in the fridge.