Begin by heating a large skillet over medium-high heat and adding a generous drizzle of olive oil. Allow the oil to shimmer.

Add sliced onions and green bell peppers to the skillet, stirring occasionally for 3-5 minutes until they become tender and slightly translucent.

Push the sautéed vegetables to the side and introduce the ground beef to the center. Cook for 5-7 minutes, stirring occasionally.

Once the ground beef is cooked, sprinkle in garlic powder, Worcestershire sauce, salt, and black pepper. Stir well for 2 minutes.

Lower the heat to medium-low, distribute the provolone cheese over the beef mixture, and cover for 2-3 minutes to melt the cheese.

Slice the hoagie rolls lengthwise to create a pocket for the filling and arrange them on a serving platter.

Spoon the beef and vegetable mixture into each prepared hoagie roll, allowing the melty cheese to hug the filling.

Optionally, toast the assembled rolls in the oven for a few minutes until golden brown before serving.