Cream butter and sugar in a large mixing bowl until fluffy.

Beat in the egg and vanilla bean until fully combined.

In another bowl, whisk flour, baking powder, and salt.

Gradually mix dry ingredients into the wet mixture to form dough.

Wrap dough in plastic and chill for 1 hour in the refrigerator.

Preheat oven to 350°F (175°C). Roll dough on a floured surface to ¼ inch thick.

Cut shapes using dinosaur cookie cutters and place on a parchment-lined tray.

Bake for 8–10 minutes until edges are just golden. Cool completely on wire racks.

Decorate with icing or toppings if desired, then serve or store in an airtight container.