Vanilice - serbian holiday cookies

Ingredients

• 1/2 lbs margarine (unsalted)
• 1/2 lbs sugar
• 1 egg
• 2 tablespoons baking soda
• peal from
• 1 lemon
• 1 lb flour
• 1/2 lbs ground walnuts
• powder sugar
• 1/2 teaspoon vanilla extract
• jam