For the dough:
Mix all the ingredients for dough and make a soft dough. Cover and keep aside.
For the filling:
Heat oil in a pan. Add chopped onions and fry till brown colour. Add chopped chillies to it. Fry for 3 - 4 minutes. Let it cool for some time. Add grated cheese and salt to the mixture. Mix well and keep aside.
For the Samosa;
Divide the dough into five portions. Roll out thin rotis of diameter 6 - inches approximately. Warm the rotis for a few seconds on a tawa without oil. Divide each roti into two parts.
Fill in the mixture and make triangles. Seal the triangles properly.
Heat in a kadai / frying pan. Deep fry on a medium heat till golden color or bake at 210 C for 8 - 10 minutes.
Serve hot with green chutney or tomato sauce.