Chunky Vegetable Potpie

Name: Chunky Vegetable Potpie
Ingredients: ½ butternut squash; 1 head celeriac; 2 medium carrots; ½ c. white cauliflower florets; ½ c. green cauliflower florets; 8 oz. Brussels sprouts; 1 medium beet; 1 small turnip (or 2 parsnips); ¼ c. olive oil; ¾ tsp. salt; .13 tsp. Freshly ground black pepper; 3 clove garlic; 2 medium shallots; ½ c. dry white wine; 1½ c. vegetable stock; 1 cube all-purpose flour; 2 tbsp. all-purpose flour; 2 tsp. baking powder; 2 tbsp. chopped fresh tarragon; 2 tsp. chopped fresh tarragon; 3 tbsp. unsalted butter; ½ c. milk; 2 tbsp. freshly grated Parmesan cheese; 1 medium zucchini