Place the cinnamon candies in the apple juice or water and melt over medium heat. When the candies have melted, add the sugar, cornstarch, and salt to make the cinnamon syrup.
Peel and slice the apples, Immediately drizzle with the lemon juice. When the sauce is ready, pour it over the sliced apples and mix well.
Drain the apples from the cinnamon sauce, reserving the liquid. Carefully add the cinnamon syrup coated apples into the prepared pie shell.
Mix together the flour, sugar, and butter. Using a pastry cutter, fork, or even your fingers works well for this. Spread the crumb topping over the Cinnamon Apple Pie.
Bake the pie until golden brown and the apples are done. Take reserved liquid and heat over medium heat. Add a bit more cornstarch and cook until thickened. You can pour this sauce over pie or other desserts.