Prepare the Filling: In a mixing bowl, combine cream cheese, strawberry powder, sugar, and lemon juice. Blend until smooth and creamy, about 2-3 minutes.

Cut the Bread: Cut 12 heart shapes from the bread using a cookie cutter, discarding the crusts.

Assemble the Sandwiches: Spread a layer of filling on one slice, top with another slice, and press gently.

Complete the Sandwiches: Place the remaining bread slices on top of the filled sandwiches, pressing down gently.

Cut and Present: Cut each sandwich into two smaller hearts and arrange on a platter.

Serve or Store: Best served fresh but can be refrigerated in an airtight container with a damp paper towel.