Light Shepherd's Pie

食材

• 400g ground lamb (or beef)
• 1 onion, diced
• 2 carrots, diced
• 1 tbsp tomato paste
• 1 cup low-sodium beef broth
• 1 tsp dried thyme
• 600g potatoes, peeled and double-boiled (see tip)
• 2 tbsp unsalted butter
• 1/4 cup unsweetened almond milk
• Black pepper