Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make gluten free shortbread chocolate bars [title] Preheat the oven to 350 degrees fahrenheit (180 degrees celsius). [title] For the shortbread, measure the flour and baking powder into the bowl. [title] Add the butter and blend the butter into the flour mixture until it has the consistency of cornmeal.

Ending1: [step] Do this with either a pastry blender or your hands. [title] Add the powdered sugar and the orange or lemon peel. Ending2: [title] Cut the shortbread into 3 medium inch (7.6 cm) rounds. [title] Cream the butter and sugar together in a food processor. Ending3: [title] Mix in the milk and the granulated sugar. [title] Using a medium mixer, mix the flour and baking powder with an electronic mixer. Ending4: [title] Scoop the flour mixture and baking powder into the loaf pan. [title] Coat the bottom of the loaf pan with the flour mixture.

Answer format: ending1/ending2/ending3/ending4