Keto Italian Sub Sandwich Casserole 🥪

This Keto Italian Sub Sandwich Casserole has all your favorite sub-flavors and even a crispy bread topping! It's low-carb, gluten-free, and super easy to make. You're going to love it!

Preparation and cooking overview

Making this Keto Casserole Recipe is super easy, taking less than an hour. Prepare the crust using shredded mozzarella, almond flour, and other ingredients. Then, layer the crust with deli ham, salami, pepperoni, capicola, cheese, veggies, and seasonings. Bake in the oven for 25-30 minutes until the crust is golden brown. And it is done!

Chef's note

Mix and match your favorite veggies to add more color and nutrients to the casserole. Add some sliced mushrooms, spinach, or even roasted eggplant for a deliciously hearty and filling dish. This keto casserole is all about versatility!

For more inspiration check out our Casseroles recipe.

🥪 Ingredients for this keto Italian sub sandwich casserole recipe

Let's make a Keto Italian Sandwich Casserole with these simple ingredients!

Crust

Casserole filling

Ingredient substitutions

Additional ingredients

Want to jazz up the flavor profile of this recipe? Let's add some optional ingredients to have a delicious low-carb casserole!

Note: These additional ingredients are completely optional and not included in the original recipe. Feel free to get creative and experiment with different flavors to suit your preferences.

How to make Keto Italian Sub Sandwich Casserole: step-by-step guide

Cooking methods

Preparation steps

1. Gather all the ingredients.
2. Measure the ingredients precisely as instructed.
3. Slice the deli meat, bell pepper, and red onion.
4. Dice the Roma tomatoes.

Cooking instructions

1. Preheat the oven to 400°F (200°C).
2. In a medium mixing bowl, melt the mozzarella in the microwave for about 30 seconds.
3. Stir in the remaining dough ingredients into the mozzarella.
4. Roll into a ball and knead 1 or 2 times. Place the dough between 2 sheets of parchment paper.
5. Roll the dough out to a 10.5" circle about ½" thick using a rolling pin.
6. Layer the remaining ingredients into a 10.5" skillet in this order: ham, salami, pepperoni, capicola, 1⁄2 the provolone, bell pepper, tomato, olives, red onion, and banana peppers.
7. Drizzle the olive oil, red wine vinegar, and Italian seasoning over the top, then top with the remaining cheese and the crust.
8. Transfer to the oven and bake for 25-30 minutes until the crust is browned. Serve immediately.

Chef's pro tip

Keep a close eye on the casserole towards the end of the baking time, and remove it from the oven as soon as the crust turns golden brown. This ensures a perfectly crispy and flavorful outcome.

What to serve with keto sub sandwich casserole?

How to make it healthier?

Time-saving tips

What can I prepare ahead of time?

Storage and reheating instructions

Storage tips

To keep the leftovers fresh, store them in an airtight container in the refrigerator, where they can stay good for up to 3-4 days. If you wish to freeze the keto sandwich casserole, it is possible, but keep in mind that the texture and taste may undergo slight changes. For the best experience, consume the frozen sandwich within 1-2 months.

Reheating best practices

Recipe wrap-up and conclusion

Our Keto Italian Sub Sandwich Casserole is a mouthwatering delight with its layers of deli meats, cheese, and veggies. Each bite offers a taste explosion that will satisfy your cravings. So grab your fork and enjoy this simple keto dinner that is a gluten-free winner!

Looking for more keto casserole recipes? Here are some delicious keto-friendly options!

Frequently asked questions

📖 Recipe

Italian Sub Sandwich Casserole

This Keto Italian Sub Sandwich Casserole has all of your favorite sub flavors and even a crispy bread topping! It's low-carb, gluten-free, and super easy to make. You're going to love it!

5 from 8 votes

Print Rate Pin Recipe

Course: Main Course

Cuisine: Italian

Keyword: casserole recipe, Italian sandwich casserole, keto casserole, low carb

Prep Time: 20 minutes minutes

Cook Time: 30 minutes minutes

Total Time: 50 minutes minutes

Servings: 6

Calories: 581kcal

Ingredients

Crust

• 1 ½ cups shredded mozzarella
• ⅔ cup almond flour
• 2 egg whites
• 1 teaspoon xanthan gum optional

Casserole filling

• ½ pound sliced deli ham
• 8 slices salami
• 8 slices pepperoni
• 8 slices capicola
• 13 slices provolone cheese
• 1 bell pepper thinly sliced
• 2 Roma tomatoes diced or sliced
• 1 cup pitted black or kalamata olives
• ¼ medium red onion thinly sliced
• ½ cup pickled banana peppers
• 2 tablespoons olive oil
• 1 tablespoon red wine vinegar
• 1 tablespoon Italian seasoning

US Customary - Metric

Instructions

• Preheat the oven to 400° F.
• In a medium mixing bowl, melt the mozzarella in the microwave for about 30 seconds.
• Stir in the remaining dough ingredients into the mozzarella.
• Roll into a ball and knead 1 or 2 times. Place the dough between 2 sheets of parchment paper.
• Roll the dough out to a 10.5" circle about ½" thick using a rolling pin.
• Layer the remaining ingredients into a 10.5" skillet in this order: ham, salami, pepperoni, capicola, 1⁄2 the provolone, bell pepper, tomato, olives, red onion, and banana peppers.
• Drizzle the olive oil, red wine vinegar, and Italian seasoning over the top, then top with the remaining cheese and the crust.
• Transfer to the oven and bake for 25-30 minutes until the crust is browned. Serve immediately.

Nutrition

Nutrition Facts

Italian Sub Sandwich Casserole

Amount Per Serving

Calories 581 Calories from Fat 399

% Daily Value*

Fat 44.3g68%

Carbohydrates 10.4g3%

Fiber 3.2g13%

Protein 35.9g72%

*

Nutritional values are estimates only and do not include carbs from sugar alcohols.

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