1. Preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper

2. If making dough from scratch, cream butter and sugar then beat in egg and vanilla and add dry ingredients

3. Slice store-bought sugar cookie dough into 1 1/2-inch rounds if using the shortcut

4. Place cookie rounds on the prepared sheet and bake for 8–10 minutes until edges are lightly golden

5. Transfer cookies to a wire rack and cool completely before decorating

6. Melt white chocolate chips or wafers in a microwave-safe bowl in 20-second intervals, stirring until smooth

7. Spoon melted chocolate into a piping bag or zip-top bag and cut a small corner to drizzle random overlapping lines across each cookie

8. Press two candy eyes into the chocolate before it sets and sprinkle with optional halloween sprinkles

9. Chill decorated cookies in the refrigerator for about 10 minutes until the chocolate is firm

10. Serve immediately or store in an airtight container at room temperature