This easy stromboli starts with store-bought pizza dough. The crispy loaf is stuffed with ground beef, Cheddar cheese, mushrooms, and olives.
Use a clean pair of scissors or a sharp knife to cut 2-inch-wide strips on either side of the filling. Fold the ends onto the filling. Then fold the dough, alternating sides, over the filling, crossing in the center.
Brush the dough with milk and sprinkle poppy seeds over the top.
Bake until golden brown, about 18 minutes. Allow stromboli to cool for five to 10 minutes before serving.