Allow the pastry sheets to thaw at room temperature for at least 30 mins.

Heat oil in a pan or a kadai.

Fry the onions, till light brown.

Add all the spices, ginger-garlic paste and green chillies. Stir for a minute.

Add the thawed spinach and stir well for about 5 mins or until it cooks and the mixture becomes dry.

After it cools, add the mayonnaise and mix well.

Spread half the mixture inside one pastry sheet leaving a one inch border on all four sides.

Carefully start rolling it up tightly like a jelly roll starting at one of the longer sides.

Wrap it in a plastic wrap and freeze until firm (about 1 hour).

Repeat with the other sheet.

Preheat oven to 375 degrees.

Cut the rolls into 1/2" thick slices.

Spray a cookie sheet with cooking spray and arrange the pinwheels on it an inch apart.

Bake for about 20 mins or until they turn golden brown.

:- Makes about 30 pinwheels.