Step 1: Planning
The cards a player draws during game play have nice pictures of each resource, but the tiles have an image suggestive of the land from which that resource might be taken.
The first obstacle was making the cupcakes into hexagons. I toyed with buying/making hexagonal pans but settled for the much easier option of topping each cupcake with a cookie. I didn't even buy a cookie cutter for this, I just cut around an actual Catan piece.
The next obstacle was making the cookies look like the tiles. I wanted to do more than just frost them their respective colors, but I didn't think I could copy what was on the tiles. I ended up decorating some with just frosting and others with candies.