Cut parsnips into batonets or slice crosswise.
Blanch in salted water until tender.
Drain and set-aside.
Heat a medium sized saucepan on medium heat.
Add butter and saute' shallots until translucent.
Add garlic and saute' until fragrant.
Stir in horseradish.
Add heavy cream and bring to simmer.
Add parsnips and continue to simmer until parsnips are well heated.
Season to taste with salt and pepper and place in serving bowl.
Top with toasted panko to serve.