INGREDIENTS
1 tbsp
salted butter
3
medium red onions (about 1 1/2 pounds), thinly sliced
2 tsp
granulated white sugar
1 tsp
salt, divided
1/4 cup
water
1 lb
pork tenderloin
1/2 tsp
coarse ground black pepper
1 tbsp
chopped fresh rosemary
1 clove
garlic, minced
2 tsp
olive oil