Sausage and Cheesy Mash Pie - Peppercorn

Ingredients

• 2 packets, Peppercorn Extra Lean Beef Sausages (900g)
• 2 large onions, sliced
• 2 cups, frozen peas
• 3 cups, beef stock
• 4 tablespoons, Worcestershire sauce, gluten free
• 3 tablespoons, plain all-flour, gluten free
• 2 tablespoons, butter
• 1 tablespoons, olive oil
• 1 teaspoons, thyme
• Salt and pepper
• 2 kg, white potatoes
• 2 tablespoons, butter, dairy free option, at room temperature
• 1/2 cup, milk of choice, at room temperature
• 2 cups, grated cheddar cheese
• 1 tablespoon, olive oil
• Sea salt and pepper