Main Ingredients

• 4 large sub rolls, sliced horizontally Soft, pillowy bread that cradles filling perfectly.
• 1/2 cup unsalted butter, softened Creamy, rich butter that adds depth to the flavor.
• 1 tbsp garlic powder Aromatic and flavorful, infusing every bite with savory goodness.
• 1 tsp onion powder Sweet and pungent, it enhances the overall profile.
• 1 tsp dried oregano Earthy and fragrant, adding Italian flair to your creation.
• 1/2 tsp salt Essential for balancing the dish's flavors.
• 1/2 tsp black pepper A subtle spice that rounds out the seasoning.
• 8 slices provolone cheese Creamy and melty, providing a luscious layer within.
• 1/2 lb deli ham Tender and savory, bringing hearty satisfaction to each sandwich.
• 1/2 cup shredded mozzarella Rich and gooey, perfect for that stretchy cheese effect.
• 1/4 cup grated Parmesan Nutty and salty, for a burst of flavor on top.
• 1 cup baby spinach (optional) Fresh and vibrant, adding color and nutrition.
• 1/2 cup sliced pickles (optional) Crunchy and tangy, offering a zesty contrast to the richness.