Place the pumpkin puree, half and half, milk, pumpkin pie spice, salt, eggs, both sugars, and vanilla in an extra large mixing bowl and mix until fully combined.
1 can pumpkin puree, 1 ½ cups Half and Half, ½ cup whole milk, ½ cup brown sugar, ½ cup white granulated sugar, 5 eggs, 3 teaspoons pumpkin pie spice, 2 teaspoons vanilla extract, 1 Pinch salt