1-First Step: Prepare the Mise en Place Preheat oven to 375°F. Line two baking sheets with parchment paper. Soften ½ cup butter and measure all ingredients. For pumpkin whoopie pies, mix ¼ cup puree into wet ingredients. This setup ensures smooth mixing for even spooky halloween whoopie pies.

2-Second Step: Make the Batter Cream ½ cup softened butter and 1 cup granulated sugar until light, about 2 minutes. Beat in 1 large egg and 1 tsp vanilla. In a bowl, whisk 2 cups all-purpose flour, ½ cup unsweetened cocoa powder, 1 tsp baking soda, and 1 tsp salt. Alternate adding dry mix and 1 cup buttermilk to wet, starting and ending with dry. Stir until just combined; batter will be thick. For vegan, use plant subs here.

3-Third Step: Scoop and Bake Use a 1.5-inch cookie scoop or 2-tbsp mounds, spacing 2 inches apart on sheets. Bake 10-12 minutes until tops spring back. Cool on sheets 5 minutes, then transfer to racks. Makes 24 halves. Bake from frozen adds 1-2 minutes for make-ahead ease. Gluten-free batter may need extra 1 minute.

4-Fourth Step: Prepare the Filling Beat ½ cup butter, 1 cup marshmallow creme, 1 cup powdered sugar, and 1 tsp pumpkin pie spice (or orange extract) until fluffy, 3-4 minutes. Tint half black with gel food coloring for webs. Add 8 oz cream cheese for tangier version. Low-cal tip: fold in Greek yogurt.

5-Fifth Step: Assemble the Pies Pair cooled cookies by size. Spread or pipe 2-3 tbsp filling on flat sides, sandwich gently. For halloween desserts flair, pipe black chocolate webs: melt ½ cup chips + 1 tbsp shortening, swirl spirals, drag toothpick outward. Add candy eyes or ghost mounds.

6-Final Step: Finishing Touches and Serving Chill assembled pies 30 minutes for set. Serve on black platters. These easy halloween whoopie pies shine at parties. For no bake halloween whoopie pies, use store-bought cookies.