Ready to get cooking? Follow these straightforward steps:

1. Begin by heating the olive oil in a large skillet over medium heat. Add the onions and cook until they are soft and translucent, about 5 minutes.
2. Stir in the bell peppers and mushrooms, cooking until the vegetables are tender, another 5-7 minutes.
3. Add the beef slices to the skillet, seasoning with garlic powder, salt, and pepper. Cook until the beef is browned and cooked through, about 5 minutes.
4. Lay out the cabbage leaves on a flat surface. Place a slice of provolone cheese on each leaf.
5. Spoon an even amount of the beef and vegetable mixture onto each cheese slice.
6. Roll the cabbage leaves tightly, securing them with toothpicks if necessary.
7. Place the rolls on a baking sheet and bake in a preheated oven at 350°F for 10 minutes, or until the cheese is melted and bubbly.

And there you have it! A meal that’s not only quick and easy but also a hit with the entire family, even on the craziest of days.