01 -
Preheat your oven to 190°C (375°F).
02 -
In a skillet over medium heat, melt the garlic butter and sauté the onions and bell peppers until softened.
03 -
Add the thinly sliced beef to the skillet, season with salt and pepper, and cook until browned.
04 -
Slice the Italian bread lengthwise and scoop out some of the insides to create space for the filling.
05 -
Fill the bread with the cooked beef, onion, and pepper mixture. Top generously with shredded provolone cheese.
06 -
Bake the filled bread in the preheated oven for 15-20 minutes, or until the cheese is melted and bubbly.
07 -
Remove the bread from the oven and allow to cool slightly before slicing. Garnish with fresh parsley and serve warm.