Step 1

Preheat your oven to 190°C (375°F).

Step 2

In a skillet over medium heat, melt the garlic butter and sauté the onions and bell peppers until softened.

Step 3

Add the thinly sliced beef to the skillet, season with salt and pepper, and cook until browned.

Step 4

Slice the Italian bread lengthwise and scoop out some of the insides to create space for the filling.

Step 5

Fill the bread with the cooked beef, onion, and pepper mixture. Top generously with shredded provolone cheese.

Step 6

Bake the filled bread in the preheated oven for 15-20 minutes, or until the cheese is melted and bubbly.

Step 7

Remove the bread from the oven and allow to cool slightly before slicing. Garnish with fresh parsley and serve warm.