Savory Philly Cheesesteak Stromboli with Golden Crust and Melted Provolone - ioanacooks

Ingredients

• 1 loaf (450 g) frozen white bread dough, thawed and risen
• 2 tablespoons mayonnaise
• 1/2 teaspoon garlic powder
• 1 tablespoon unsalted butter
• 1 medium green bell pepper, diced
• 1 medium yellow onion, diced
• 120 g mushrooms, thinly sliced
• 250 g deli roast beef, thinly sliced
• 8 slices (160 g) provolone cheese
• 1 tablespoon unsalted butter, melted
• 1/4 teaspoon garlic salt
• 1 tablespoon sesame seeds
• 1 teaspoon dried parsley