Recipe: Catch-all Pot Pie

Cooler days are ahead and it might become safe to turn on the oven after tonight, so I'll post this one I made at our house a week ago to rave reviews. It was super easy and allowed me to use up all kinds of veggies I had left over. As with most of the recipes posted here, feel free to be loosey goosey with quantities of herbs and veggies because it's more about using what you have on hand. The only measurements that need to be adhered to are the ones for the biscuit topping. So here goes...
(From the Moosewood Restaurant New Classics - one of my all-time favorite cookbooks)

-2 cups coarsely chopped potatoes and sweet potatoes if you have them
-2 cups chopped carrots and/or parsnips
-1 or 2 chopped onions
-Shitakes or other mushrooms
-Several cloves of minced garlic
-3 cups of stock or water
-tsp of dried or fresh thyme, oregano or rosemary
-tsp salt if not using stock with salt already added
Combine above list and simmer for 15 minutes in large pot. While this is cooking, create mixture of 3 tbsp cornstarch in 1/2 cup or so of water for the gravy. Also during this time create the biscuit topping:

-2 cups white flour
-1/2 tsp salt
-1 tbsp baking powder
-1/2 tsp baking soda
-6 tbsp melted butter
-1 cup buttermilk or plain yogurt
-1 tsp chopped fresh dill
sift together dry and wet ingredients in separate bowls. Combine these into one bowl mixing as little as possible to make a soft dough. If you get zealous with making sure every lump is gone it will make the end product tough and hard instead  of a light biscuit.

Add to simmering veggies the cornstarch mixture and any softer veggies like peas, corn, summer squash, okra, tomatoes, pretty much whatever. (If you're not familiar with cooking okra, keep the ratio of okra mass to tomato mass at least one to one-the acid in the tomatoes cuts the acquired taste and texture of okra.)
Allow veggies and thickener to simmer for 5 more minutes or so and then pour into a lightly greased deep baking dish. Carefully spoon blobs of the biscuit onto the top and then bake for 30 minutes or so at 350. A knife should come away from the center of a biscuit clean when they are done.
Enjoy-we sure did!