Chocolate Cream with sprinkles

1 (9 inch) pie shells, blind baked (see Classic Pie Crust Classic Pie Crust, Idiot Proof Step-By-Step Photo Tutorial ) 2 cups half-and-half 1 teaspoon ground[...]

1 cup water 1/2 cup butter 1/8 teaspoon salt 1 cup flour 2 tablespoons Dutch-processed cocoa powder 1/4 teaspoon cinnamon 4 eggs 1 (13 ounce) jar nutella 2[...]