Miso mushroom Pork Pot Pie

Ingredients

• 2 green onions, thinly sliced
• 1/4 tsp. ground black pepper
• 1/2 tsp. sea salt
• 2 Tbsp. rice vinegar
• 1 Tbsp. tapioca starch
• 3 cups low-sodium vegetable stock
• 4 tsp. grape seed oil, divided
• 1/2 lb extra-lean ground pork shoulder 
or ground beef
• 1 yellow onion, thinly sliced
• 4 cups sliced cremini, shiitake and oyster mushrooms
• 2 cloves garlic, puréed
• 2 large Russet potatoes, diced
• 2 Tbsp. red miso paste
• 2 cups frozen shelled edamame, thawed