Into a large mixing bowl, crumble the vegan sausage and ground beef.
Add steak seasoning blend, garlic powder, and Italian flat-leaf parsley.
Using your very clean hands, mix and mash the ingredients until fully combined.
Divide mixture into 6 even portions. Roll each portion into a ball, then use the palm of your hand to flatten each ball into a patty of about 1/2-inch thickness.
Set the prepped patties aside, then make the pepper and mushroom topping.