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For the marinara sauce:
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Place olive oil, onion, garlic, salt, pepper, Italian seasoning and oregano into a large skillet with a lid.
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Heat over medium-high sauteing until onions are softened.
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Add tomatoes, tomato paste, honey and water.
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Stir until well combined.
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Bring to a simmer.
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Reduce heat to low and cover.
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Cook 30 minutes.
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For the meatballs: In a large bowl, mix ground beef, egg, onion, garlic, Italian seasoning, pepper, salt, Dijon mustard, fresh basil and Parmesan cheese until thoroughly combined.
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Divide the meat mixture into 20 meatballs.
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For the assembly and preparation: Gently place the meatballs into the simmering marinara sauce, allow them to cook for 10 minutes before gently stirring.
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Then cook for 30 minutes covered over low.
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13
Add basil and stir to combine.
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14
Preheat oven to 450 F.
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15
Cut a V in the top of the hoagies and remove the insides to make room for the meatballs.
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Brush the inside and outside of the hoagies well with olive oil.
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Place the rolls on a baking sheet.
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Mix mozzarella and Parmesan cheese.
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Use half of the cheese mixture and divide evenly between the hoagies.
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Place the hoagies in the preheated oven and bake 4 minutes uncovered.
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21
Divide meatballs and sauce to fill the hoagie rolls.
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22
Divide remaining cheese over the top of the meatballs.
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Bake another 5 minutes or until cheese is golden brown.
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Allow to cool 5 minutes before serving.