Preheat oven to 350°F.

Line 8" square pan with foil, allowing foil to extend beyond rim {just easier to remove that way}

Combine crumbs, 1/2 cup flour and brown sugar in a bpwl

Cut in margarine or butter with two knives until it resembles crumbs

Press mixture firmly into the bottom of the pan, and bake for 15 minutes {do not burn!}

Beat cream cheese and sugar on medium speed

Add eggs and 2 tbsp flour and mix well

Blend in the lemon peel, lemon juice and baking powder.

Pour mixture over the crust

Bake 25 minutes

Let cool completely then put into the fridge for at least 2 hours or even overnight.

To serve, cut into squares and sprinkle with icing sugar or some more lemon peel for garnish