01 - Preheat oven to 350°F. Line a baking sheet with parchment paper.
02 - In a medium bowl, whisk together the flour, baking powder, baking soda, and salt until evenly distributed.
03 - In a large bowl, beat the softened vegan butter and granulated sugar until light and fluffy. Mix in the plant-based milk and vanilla extract until fully incorporated.
04 - Gradually add the dry ingredient mixture to the wet ingredients, stirring gently until a soft, cohesive dough forms. Avoid overmixing.
05 - Scoop tablespoon-sized portions of dough and roll into balls. Place them 2 inches apart on the prepared baking sheet. Slightly flatten each ball with the palm of your hand.
06 - Bake for 10 to 12 minutes, or until the edges are just beginning to turn golden. Allow the cookies to cool on the pan for 5 minutes, then transfer to a wire rack to cool completely.
07 - Blend the diced pineapple, diced mango, coconut cream, powdered sugar, and lemon juice in a blender or food processor until completely smooth. Chill the mixture for 15 minutes to thicken.
08 - Once the cookies are fully cooled, spread or pipe a generous layer of the pineapple mango cream onto the flat side of half the cookies. Top each with a second cookie, flat side down, to form sandwiches.
09 - Refrigerate the assembled cookies for 30 minutes before serving to allow the filling to set for a firmer texture.