INGREDIENTS
2 tbsp
Flat-leaf parsley, fresh
1
Russet potato (12 oz.)
1 cup
Shallots
1
Sweet potato (12 oz.)
2/3 cup
Chicken broth, homemade or low-salt canned
1 tbsp
Dijon mustard
2 tbsp
Horseradish, prepared
1
Black pepper, Freshly ground
2
Kosher salt
1 1/2 cups
Breadcrumbs, coarse fresh
4 tbsp
Butter, unsalted
2/3 cup
Heavy cream
7 1/3 tbsp
Parmigiano reggiano, grated