Pumpkin Pie Bars

Cream the butter and sugar until light and fluffy.

Press the dough into the prepared pan into an even layer, then par bake.

While the shortbread bakes, whisk together all ingredients for the pumpkin pie filling until smooth.

Pour the pumpkin pie filling on top of the par-baked crust, then return to the oven.

Mix together the crumble ingredients with a fork.

Gently sprinkle the topping onto the partially baked bars until completely covered. Return the bars to the oven to finish baking.

Chill the bars completely in the fridge until fully set and cold. Slice the bars, then serve.