INGREDIENTS
8 oz
Sweet italian sausage
1/3 cup
Apple, tart green
1 tbsp
Flat-leaf parsley, fresh
8
Red onions, small-to-medium
1 tbsp
Sage, fresh
1/4 tsp
Fennel seeds
1
Salt, Coarse
1/2 cup
Breadcrumbs, plain dried
2 tbsp
Butter, unsalted
3/4 cup
Gruyere cheese, grated