Wash watermelons well. Cut a thin slice off one side to give you a flat surface. Roll melon to flat side (which provides stability for cutting the melon) and cut 1″ wide pieces of watermelon. Lay pieces flat and using a 1 1/4″-1 1/2″ round or square cookie cutter, cut pieces of melon.

With the small end of a melon baller tool, cut little half rounds out of the center of the piece. Whip goat cheese and milk together until creamy. The amount you use will depend on your goat cheese. Place the cheese into a piping bag fitted with a star tip and pipe into the indentations. Garnish with a little slice of cucumber. Place on a flat plate, squeeze lime juice over the top and serve.