Make-Ahead Cottage Pie: Easy Weeknight Dinner Win!

Ingredients

• 2 tbsp (30ml) olive oil
• 2 lb (900g) beef chuck, cut into 1-inch cubes
• 1 large onion, chopped (approx. 1 cup)
• 2 carrots, chopped (approx. 1 cup)
• 2 celery stalks, chopped (approx. ½ cup)
• 4 cloves garlic, minced (approx. 1 tbsp)
• 2 tbsp (30ml) tomato paste
• 1 cup (240ml) dry red wine (like a Merlot or Cabernet Sauvignon)
• 3 cups (720ml) beef broth (low sodium)
• 2 sprigs fresh rosemary
• 2 sprigs fresh thyme
• 1 bay leaf
• 1 tbsp (15ml) Worcestershire sauce
• Salt and black pepper to taste
• 3 lbs (1.36 kg) Yukon Gold potatoes, peeled and quartered
• 1/2 cup (120ml) whole milk
• 4 tbsp (57g) unsalted butter
• 1/4 cup (packed) chopped fresh parsley
• 2 tbsp (packed) chopped fresh chives
• Salt and white pepper to taste