Preheat oven to 35o degrees F. Prepare store-bought pie crust as directed.
In a large mixing bowl combine pumpkin, eggs, brown sugar, pumpkin pie spice, cinnamon, and salt. Mix well to combine. Add in the cream and half and half, mix in until the mixture is smooth and completely combined.
Pour into the prepared unbaked pie crust*. Bake at 350 for 45-50 minutes, the pie will have a slight jiggle but the middle should be set. Allow to cool before slicing.
Notes
Loosely wrap the edge of the piecrust before baking to prevent the crust from burning.