Braised Lamb Shanks - Master recipes

Ingredients

• 4 large lamb shanks (or 6 small lamb shanks) -
• Kosher salt -
• Freshly ground black pepper -
• 2 tbsp. extra-virgin olive oil -
• 4 tbsp. unsalted butter, divided -
• 1 yellow onion, finely chopped -
• 2 medium carrots, peeled, finely chopped -
• 3 garlic cloves, minced -
• 2 tbsp. tomato paste -
• 2 c. low-sodium beef broth -
• 1 (15-oz.) can tomato sauce -
• 2 rosemary sprigs -
• 1 c. red wine -
• Mashed potatoes, for serving (optional) -