01 - Preheat oven to 350°F. Line two baking sheets with parchment paper and set aside.
02 - In a medium bowl, whisk together flour, baking powder, baking soda, and salt until evenly blended.
03 - In a large bowl, beat sugar and melted coconut oil until smooth. Add watermelon juice, plant-based milk, vanilla extract, and almond extract. Mix until fully incorporated.
04 - Gradually add dry ingredients to the wet mixture, stirring until a soft, uniform dough forms.
05 - Divide dough into two portions: place approximately 2/3 in one bowl and tint pink or red with vegan food coloring for the flesh. Tint the remaining 1/3 green for the rind.
06 - Take about 1 1/2 tablespoons of pink dough, roll into a ball, then flatten slightly into a disc. Press a small amount of green dough along one edge to create the rind. Shape into a semi-circle or triangle to resemble a watermelon slice.
07 - Place cookies on prepared baking sheets, spacing 2 inches apart. Press several mini vegan chocolate chips into the pink area as seeds. Optionally sprinkle with coarse sugar.
08 - Bake for 10 to 12 minutes, until edges just begin to turn golden. Avoid overbaking to maintain soft texture.
09 - Let cookies rest on baking sheet for 5 minutes, then transfer to wire rack to cool completely before serving.