Preheat oven to 350 degrees Fahrenheit.

Beat the margarine, sugar, eggs and vanilla until well-blended. Add orange zest.

In a separate bowl, combine flour, baking powder and salt.

Add flour mixture to wet mixture and add remaining ingredients. Mix well.

Divide dough into two halves. Transfer both halves to a baking sheet lined with Gefen Parchment Paper. Roll each half into a 12-inch log. Using your fingers, gently press each log down to a thickness of 7⁄8 of an inch.

Bake until risen and firm, about 20 minutes. Cool completely.

Reduce oven temperature to 300 degrees Fahrenheit. Using a serrated knife, cut logs into half-inch thick slices. Lay each slice on its side in a single layer on the baking sheet.

Return to oven and let bake for another 15 minutes. Turn slices over and bake 10 minutes longer.