INGREDIENTS
4
medium kale leaves, stems removed
2 tsp
canola oil
2
medium red onions, cut into 1/2-inch-thick slices
1/4 tsp
freshly ground black pepper
1/8 tsp
kosher salt
1 tsp
red wine vinegar
8
slices multigrain bread
Cooking spray
1 oz
finely grated Parmesan cheese, divided (about 1/4 cup)
3 1/2 oz
shredded raclette cheese (about 7/8 cup)