Preheat the oven to 400°F (200°C)
Place one of the puff pastry sheets on a floured surface, rolling the sheet until it reaches 9x15 inches.
Spread the strawberry fruit jam evenly over it, leaving a small border.
Place the second sheet of puff pastry sheets on a floured surface, rolling the sheet until it reaches 9x15 inches.
Gently place the second sheet on top of the jam covered puff pastry, crimping the edges with a fork to seal.
In a small bowl, whisk together 1 tablespoon of water and 1 egg. Brush this egg wash over the top of the pop tart for a golden finish.
Place the pop tart in the preheated oven and bake for 20 minutes or until the pastry turns golden brown.
While the pop tart is cooling, whisk together 2 cups of powdered sugar and 1/4 cup of heavy cream to make the icing. Drizzle it generously over the top and sprinkle 1/3 cup of sprinkles.
Sprinkle Magic: Immediately sprinkle 1/3 cup of colorful sprinkles over the wet icing.
Once the icing sets, slice your Giant Strawberry Pop Tart into generous portions and enjoy!