Step 1

Preheat oven to 350 degrees F. Unroll pie crust and place in 9-inch pie plate; flute edges.

Step 2

In a large saucepan, combine brown sugar, flour, corn syrup, vanilla, and egg. Slowly stir in water and cook over medium heat, stirring until mixture boils. Let cool.

Step 3

In a medium bowl, mix CRUMB TOPPING ingredients until crumbly. Pour cooled brown sugar mixture into crust and top evenly with crumbs.

Step 4

Bake 40 to 45 minutes, or until golden and set.