Vegetable Pot Pie

Ingredients

• 1 cup all-purpose flour bleached
• 1 teaspoon baking powder
• 1/8 teaspoon baking soda
• 1/4 teaspoon salt
• 4 tablespoons unsalted butter frozen solid
• 1/2 cup buttermilk cold, plus a few extra teaspoons if necessary
• 1 cup cheddar cheese
• 2 onions medium-large, red or white, cut into medium dice or 2 medium leeks, trimmed, quartered lengthwise, cut into medium dice and washed
• 2 pounds vegetables -pick a mix-your choice, see below
• 1 pound boiling potatoes and/or sweet potatoes, cut into medium dice
• 6 tablespoons olive oil divided
• salt and ground black pepper
• 1 1/2 teaspoons dried thyme tarragon, or basil
• 2 cups chicken broth
• 12 ounces evaporated milk
• 6 tablespoons flour all-purpose
• 1/4 cup dry sherry
• 6 tablespoons grated Parmesan cheese
• 1/2 cup frozen peas
• 9 inches refrigerated piecrusts