Homemade Pop Tarts with strawberry or brown sugar-cinnamon filling Recipe

Ingredients

• 2 cups all-purpose flour
• 1 Tbsp. granulated sugar
• 1 tsp. kosher salt
• 1 stick cold unsalted butter (8 Tbsp.), diced
• 4 Tbsp. cold shortening, diced
• 2 eggs, divided
• 1–2 Tbsp. cold water
• 2 Tbsp. whole milk, divided
• ¾ cup powdered sugar
• Pinch of salt
• Pink food color, optional
• ¼ tsp. ground cinnamon
• Sprinkles, optional