Preheat the oven to 375°F and lightly grease a 9-inch pie dish.
In a saucepan over medium-low heat, combine strawberries, water, sugar, lemon juice, zest, salt, and vanilla. Stir and cook until strawberries begin to soften, about 4–5 minutes.
Add cornstarch and stir continuously for 1–2 more minutes until the filling thickens and becomes glossy. Remove from heat and set aside.
Roll out the bottom pie crust into the greased dish. Pour in the warm strawberry filling and spread evenly.
Place the second crust over the top. Trim excess dough, crimp the edges, and cut 3–5 slits in the center to vent steam.
Bake for 35–45 minutes, or until the crust is golden brown and you see some bubbling.
Let the pie cool completely before icing.
Whisk together powdered sugar and half and half to form a thick but pourable glaze. Drizzle across the top of the pie.
Sprinkle generously with rainbow nonpareils and let the glaze set.
Slice, serve, and enjoy your Strawberry Pop Tarts Pie with vanilla ice cream or all on its own!