Preheat your oven to 400°F (200°C).
In a large skillet over medium heat, sauté the onions and bell peppers until softened, about 5 minutes.
Add the sliced sirloin steak to the skillet and cook until browned, about 4-5 minutes.
Stir in the garlic powder, Worcestershire sauce, black pepper, and beef broth, simmer for another 2-3 minutes.
Spread the beef mixture evenly into a greased baking dish.
Top the beef mixture with frozen potato tots, arranging them in a single layer.
Sprinkle the shredded provolone cheese generously over the potato tots.
Bake in the preheated oven for 25-30 minutes, or until the cheese is bubbly and the tots are golden brown.
Remove from the oven and let it cool for 5-10 minutes before serving.