Be ready with all the ingredients

In a kadai, heat butter add the all-purpose flour and stir continuously on low flame. After 2 minutes add salt and black pepper.

Add milk to the kadai. Add milk slowly so as to avoid forming of lumps. Keep stirring constantly as now the sauce will start to thicken and stick to the bottom.

Puree the roasted green capsicum and green chillies. Add the puree in the prepared white sauce. Keep stirring.

Cook for another 2 minutes.

Serve once it cools down on room temperature. Can be served along with any tikkis or cutlets.