Irish Steak, Stout and Cheddar Cheese Pie | Heinen's Grocery Store

Ingredients

• 3 lbs. Heinen's CARE Certified chuck roast
• 3 Tbsp. all-purpose flour
• 1 Tbsp. coarse Kosher salt
• 1 tsp. black pepper
• 5 Tbsp. olive oil, divided
• 1 ½ cups Heinen's beef stock
• 1 Tbsp. molasses
• 1 large sweet onion, chopped
• 16 oz. baby portobello mushrooms, trimmed and washed
• 1 Tbsp. tomato paste
• 4 fresh thyme sprigs
• 2 12 oz. bottles Guinness stout beer
• 1 cup Irish cheddar cheese, grated
• 1 lb. frozen, puff-pastry, thawed
• 1 egg yolk, lightly beaten