Zucchini Marinara Subs
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Zucchini marinara subs have quickly become one of my new favorite recipes, especially when I’m looking for a healthier alternative to a classic meatball sub. Instead of using traditional meatballs, this recipe swaps in sautéed zucchini, making these subs a lighter, vegetarian option that doesn’t skimp on flavor.
The zucchini is tender and perfectly seasoned, pairing beautifully with the rich marinara sauce. Despite being a healthier twist, these zucchini marinara subs are just as satisfying as their meaty counterparts, offering all the comforting flavors of a classic sub without the heaviness. I originally found inspiration for this recipe on allrecipes.com and made a few tweaks to suit my taste.

What I love most about this recipe is its simplicity, making it a great option for a quick and delicious vegetarian meal. When I made these zucchini marinara subs for lunch, I was thrilled to find that the recipe yielded enough for leftovers, giving me a tasty and convenient meal for the next few days.
I served the zucchini mixture on a crusty whole wheat sub roll that I picked up from the bakery at my local Smith’s for just 33 cents each—talk about a great deal! The combination of the hearty whole wheat bread and the flavorful zucchini marinara was absolutely perfect. If you’re a fan of pasta, you could even add a bit more marinara sauce to the zucchini mixture and serve it over your favorite noodles for a delicious and versatile dish. I absolutely love these zucchini marinara subs, and I think you will be, too!
Ingredients to Make Zucchini Marinara Subs
- OLIVE OIL
- ZUCCHINI
- MUSHROOM
- GARLIC
- SALT AND PEPPER
- MARINARA SAUCE
- SLICED PROVOLONE CHEESE
- CRUSTY FRENCH OR ITALIAN SANDWICH ROLLS
How to Make Zucchini Marinara Sub Sandwiches
Heat a large skillet over medium heat and add a drizzle of olive oil. Once the oil is hot, add the zucchini slices and mushrooms to the skillet. Cook the vegetables, stirring occasionally, until they are browned and tender, about 5-7 minutes. Season with salt and pepper to taste.
Add the minced garlic to the skillet and sauté for about 1 minute, just until the garlic becomes fragrant. Be careful not to let it burn. Then, stir in the marinara sauce, mixing everything together until the sauce is evenly distributed. Continue cooking until the sauce is heated through, about 2-3 minutes.
While the sauce is heating, place a slice of cheese on each sub roll. Arrange the rolls on a baking sheet and place them under the broiler. For best results, keep the oven rack in the center position and broil until golden brown and the cheese is melted and bubbly. Be sure to keep a close eye on the rolls to prevent them from burning.
Once the cheese is melted, remove the rolls from the oven. Divide the zucchini and mushroom mixture evenly between the four rolls, spooning it over the melted cheese. Serve the subs immediately and enjoy your delicious, healthier twist on a classic sandwich!

Frequently Asked Questions
Can I add other vegetables to the zucchini marinara subs?
Absolutely! You can customize these subs by adding other vegetables such as bell peppers, onions, spinach, or eggplant. Sauté them along with the zucchini and mushrooms for added flavor and texture.
What type of cheese works best for these subs?
Mozzarella cheese is a classic choice for its mild flavor and excellent melting properties. However, depending on your preference, you can also use provolone, cheddar, or a mix of cheeses. For a bit of a tangy kick, try using a slice of Parmesan or even feta.
Can I use a different type of bread for the subs?
Yes, you can use any type of bread you prefer. While crusty whole wheat sub rolls work great, you can also use ciabatta, baguettes, or even soft hoagie rolls. Make sure the bread is sturdy enough to hold the zucchini mixture without becoming too soggy.
Can I prepare the zucchini mixture ahead of time?
Yes, you can prepare the zucchini and mushroom mixture ahead of time and store it in the refrigerator for up to 2 days. When you’re ready to assemble the subs, simply reheat the mixture in a skillet until warmed through, then proceed with the recipe
Can I serve the zucchini marinara mixture over pasta instead of serving it in a sub?
Absolutely! The zucchini marinara mixture works wonderfully as a pasta sauce. Simply prepare your favorite pasta, then toss it with the zucchini mixture and top with cheese. It’s a delicious and versatile way to enjoy the flavors of the subs in a different form.
FOR MORE RECIPES LIKE THIS, TRY:

Zucchini Marinara Subs
Real Mom Kitchen
Equipment
Ingredients
- 1 Tbsp olive oil
- 2 zucchini medium – diced (cut lengthwise into fourths and the diced into 1/2 inch chunks)
- 2 mushroom sliced
- 1 clove garlic minced
- salt and pepper to taste
- ¾ – 1 cup marinara sauce depending on how saucy you want it
- 4 slices provolone cheese
- 4 crusty French or Italian sandwich rolls 6 inch, split
Instructions
- In a skillet over medium heat, fry the zucchini and mushrooms in olive oil until browned and tender. Season with salt and pepper.
- Add garlic to mixture and sauté for 1 min. Stir in the marinara sauce and cook until sauce is heated.
- Place a slice of cheese on each roll and broil in oven until cheese is melted. (remember my tip about broiling – leave the rack in the center of the oven, don't move it up and no burnt roll that is as long as you keep you eye on it)
- Divide zucchini mixture evenly between the four rolls and enjoy.
Nutrition
