This is not really a pie but that is what my kids call it.
1 lb ground beef
1 small chopped onion
4 cans of veggies of your choice ( You can use fresh or frozen too)
1 can cream of mushroom or chicken soup
3/4 c milk
1 can large flaky biscuits
Brown ground beef with onion and drain. Add drained veggies, soup, and milk. Pour in a pan and top with biscuits. Bake at 350 until biscuits are done.