Step 1

Preheat oven to 400º F.

Step 2

In a large saucepan over medium-high heat, whisk together water, sugar and cream of tartar.

Step 3

Bring to a boil, then lower heat and let simmer for 5 minutes or until thickened.

Step 4

Remove from heat, stir in lemon juice and cinnamon, and let cool 5 minutes.

Step 5

Unroll pie dough and place in a standard pie pan, then fill with ritz crackers.

Step 6

Pour slightly cooled syrup mixture over crackers.

Step 7

Optional: place second sheet of pie dough over filling, and seal and crimp edges.

Step 8

OR: whisk together crushed crackers, brown sugar, cinnamon and butter until crumbly topping forms, then sprinkle over pie filling.

Step 9

Place pie in oven and bake for 15 minutes. Lower oven temperature to 350º F and bake for another 20 minutes or until golden brown.

Step 10

Remove from oven and serve with whipped cream or vanilla ice cream. Enjoy.