In a large bowl mix dry pudding mix with half-and-half and and 1/4 cup of the heavy cream. Add spices and whisk until smooth. Add the pumpkin and stir to combine until uniform throughout.

In a mixing bowl, add remaining heavy cream and brown sugar. Beat until very light and fluffy. Fold in pumpkin cream mixture until combined.

Transfer the mixture into a piping bag and pipe even amounts into the individual mini fillo shells. Serve as needed. Garnish with crushed walnuts if desired.