Chicken and Green Split Pea Pot-Pie with Scallion Cheddar Biscuits - Half Cup Habit

Ingredients

• 12 oz chicken breasts (boneless skinless, cut into 1" cubes)
• 4 tbsp olive oil (extra-virgin )
• 4 oz mushrooms (cremini, sliced )
• 4 oz onion (diced)
• 2 carrots (split ½ lengthwise and diced)
• 2 cloves garlic (minced)
• 1 tsp fresh thyme leaves (finely chopped )
• 2 sage (leaves, finely chopped )
• 2 celery (ribs, split ½ lengthwise and diced)
• ¼ cup white wine (optional))
• 2 cups chicken broth (hot)
• ¼ cup split peas, green ((dry))
• 1 cup all-purpose flour (plus1/4 cup for rolling out)
• 1½ tsp Baking powder
• ½ tsp salt
• ½ tsp black pepper (freshly ground)
• 5 tbsp butter (cold and cut into very small cubes)
• ¾ cup buttermilk (plus ¼ cup for finishing the top)
• 8 tbsp cheddar cheese (sharp, grated,1 oz reserved for the tops)
• 2 green onions (green part only, thinly sliced)