Fossil impressions

Make dinosaur footprints in a shortbread cookie and bake them to form imprint fossils. Fill the footprints with chocolate and remove the chocolate to form relief fossils.

A chocolate cast of a footprint sits on top of a pan of shortbread cookies, a small, red model tyrannosaur skull lies next to the pan.

On an empty wooden surface, ingredients are presented one after another in individual dishes: 1 cup of softened unsalted butter, 1/3 of a cup of granulated sugar, 1 cup of brown sugar, 1 teaspoon of vanilla extract, 1 tablespoon of instant coffee, and 2 cups of flour.

A glass mixing bowl is placed on a wooden table. The butter is mixed with the granulated sugar using a red spatula. Next the brown sugar is mixed in. The vanilla extract is then added to the mix, forming a light brown paste. Finally both the flour and coffee are mixed in, forming a dry, crumbly dough. The cookie dough is poured into a baking pan. The dough is evenly spread in the pan, but it is also kept loose and not tightly packed.

Half a potato has a dinosaur footprint carved out of the cut surface, like a stamp. It is dipped into flour, evenly coating the footprint. The potato is then used to make five footprint impressions on the top of the unbaked shortbread. The pan of shortbread with footprint impressions is put into the oven at 325°F. After 30-40 minutes the cooked shortbread is removed from the oven.

A handful of chocolate chips are poured into a bowl and then melted in the microwave. The top of the shortbread cookies is dusted with cocoa power and the melted chocolate is poured into the footprints. The chocolate has cooled and is gently separated from the cookie with a butter knife. A cast of the footprint is revealed on the underside of the chocolate.