PREPARING THE SPONGE

First, prepare the sponge.

In a medium size bowl, mix the bread flour and instant yeast until combined.

Mix in the warm (80°F) water until combined.

Cover the sponge with plastic wrap, and let sit at room temperature while you prepare the meatballs.

PREPARING THE MEATBALLS

Mix all Wagyu beef meatball ingredients (ground beef, grated parmesan cheese, bread crumbs, egg, kosher salt, hot sauce, minced sweet onion, minced garlic, and minced parsley) together in a medium size bowl until well incorporated.

Divide the beef mixture into 15 equal portions (1 1/2 ounces each), and round each portion into a ball.

Place the meatballs on a on parchment paper-lined baking sheet, and refrigerate the meatballs while making the dough/hoagies and sauce.

PREPARING THE DOUGH

In a medium size bowl, mix together the bread flour, semolina flour, kosher salt, extra virgin olive oil, and the sponge (you previously assembled) until a shaggy dough forms.

Use your hands or a dough hook, and knead for 7 minutes or until a smooth dough forms.

Cover the dough with plastic wrap, and let it rise for 1 hour.

Once the dough has risen for 1 hour, place the dough on a lightly floured surface.Divide the dough into 5 equal portions.

PREPARING THE HOAGIES

Sprinkle semolina flour onto a parchment paper-line baking sheet.

Flatten one of the portions of dough into a rectangle. Fold in the sides, and roll it into a 5-inch-long log. Pinch the seams.

Place the hoagie roll, seam-side-down, onto the baking sheet.

Repeat this process with the remaining pieces of dough.

Spray the hoagie rolls with olive oil pan spray, so they are coated.

Cover the rolls loosely with plastic wrap, and place them in a warm place.

Proof for 1 hour.

Preheat your oven to 400°F, and remove the plastic wrap from the rolls.

Use a pastry brush to brush each roll with cold water.

Then use a serrated knife to cut 3 diagonal slashes in each roll.

Bake the rolls at 400°F for 20-23 minutes until they are golden brown.

Let them cool completely.

Then, slice each roll almost in half lengthwise without cutting all the way through. This allows the roll to stay in one piece.

PREPARING THE SAUCE

In a small stainless steel sauce pan, heat the olive oil over medium heat.

Add in the minced sweet onion and shallot. Saute until the onion is translucent.

Once the onion is translucent, add in the minced garlic. Cook for 2 minutes longer.

Add in the red wine, and deglaze the pan.

Once the red wine is absorbed, add in the tomato paste. Stir for 2 minutes.

Then, add in the crushed tomatoes, kosher salt, and black pepper.

Cook on medium heat for 25 minutes, while stirring occasionally.

Add in the minced fresh basil, and season to taste with kosher salt and freshly ground black pepper.

Bake the meatballs while the sauce is cooking on the stove.

FINAL STEPS

Bake the meatballs at 400°F for 20-25 minutes or until they are golden brown.

Let them cool for 10 minutes. Then, fold the meatballs into the sauce.

Preheat your oven to 425°F.

Place the cut hoagie rolls in a shallow casserole dish.

Place 3 cooked meatballs in each hoagie roll. Make sure to get plenty of sauce with the meatballs.

Top each hoagie with 1 1/2 slices of provolone cheese and some fresh mozzarella cheese.

Bake at 425°F until the cheese is melted and slightly browned.

Garnish with fresh basil, serve immediately, and enjoy!