Preheat oven to 425 degrees Fahrenheit and spray a muffin pan with non-stick spray.
Flatten and mold biscuits into each muffin cup, bringing the biscuit up the sides.
Bake for 6-8 minutes, until light golden. If biscuits have risen too much to hold meat, press downsides and bottom while still warm.
While the biscuits are baking, brown the ground beef in a large skillet and drain.
Stir in the onions, salt, pepper and garlic and allow to cook together for a couple of minutes.
Add the flour to the mixture and stir until blended to a paste.
Add beef stock, Worcestershire and vegetables. Mix well
Heat the mashed potatoes in a microwave for 5 to 6 minutes stirring halfway through.
Spoon about 2-3 tablespoons of meat mixture into each biscuit shell.
Then top with equal amount mashed potatoes.
Sprinkle the top with dried parsley flakes. Place in oven and bake for 12-15 minutes.
Remove from oven and allow to cool slightly before removing individual pies.