01 - Preheat oven to 400°F. Line a rimmed baking sheet with parchment paper and set aside.
02 - On a lightly floured work surface, unfold thawed puff pastry sheet. Using a 3-inch heart-shaped cookie cutter, cut 16 heart shapes from the pastry. Arrange 8 whole hearts evenly spaced on the prepared baking sheet.
03 - Using a 2-inch heart-shaped cookie cutter, cut centers from the remaining 8 hearts to create decorative frames. Set aside.
04 - Lightly brush the edges of the solid hearts on the baking sheet with egg wash. Carefully place the heart frames on top, pressing gently to seal the layers together.
05 - In a small mixing bowl, combine softened cream cheese, granulated sugar, and vanilla extract. Beat with a fork or hand mixer until completely smooth and creamy.
06 - Spoon approximately 1 tablespoon of cream cheese filling into the center of each pastry heart. Top each with 1/2 tablespoon strawberry preserves, then arrange a few fresh strawberry slices over the preserves.
07 - Brush the exposed pastry edges with remaining egg wash for a golden, glossy finish.
08 - Bake for 16-18 minutes until pastries are puffed, deeply golden, and baked through. Allow to cool on the baking sheet for 10 minutes before glazing.
09 - While pastries cool, whisk powdered sugar, 1 tablespoon milk, and vanilla extract in a small bowl until smooth. Add additional milk 1/2 teaspoon at a time if needed for drizzling consistency.
10 - Drizzle glaze generously over cooled danishes. Serve immediately while still slightly warm, or allow glaze to set for 15 minutes before serving at room temperature.