Broiled Turkey Avocado Sourdough Sandwich with Provolone

Broiled Turkey Avocado Sourdough Sandwich

The scent of bubbling provolone and the crackle of sourdough edges crisping under the broiler make this a significant upgrade over a cold lunch. While most deli sandwiches turn soggy, the intense heat transforms these ingredients into something reminiscent of a bistro.

You can expect a sandwich that holds its form. A strategic layering method ensures the Broiled Turkey Avocado Sourdough Sandwich remains intact, preventing the avocado from sliding out and the bread from absorbing tomato juice.

It's a quick, satisfying meal that uses a few clever tricks to achieve a mahogany-colored crust without drying out the meat.

Why the Cheese Goes First

• The Moisture Shield: Placing cheese directly on the bread blocks the tomato and turkey juices from soaking into the sourdough.
• Top Down Heat: The broiler melts the cheese and toasts the bread rapidly, which prevents the turkey from overcooking and becoming rubbery.

The Ingredient Breakdown

For the Base

• 2 slices (60g) sourdough bread
• 1 tbsp (14g) unsalted butter, softened Why this? Adds a rich, salty flavor to the bottom crust
• 1 tsp (5g) mayonnaise Why this? Creates a more uniform, golden brown top crust

For the Fillings

• 4 oz (113g) deli turkey breast, thinly sliced
• 2 slices (40g) provolone cheese
• 1/2 medium (50g) ripe avocado, sliced
• 2 slices (30g) heirloom tomato

For the Seasoning

• 1 pinch (1g) sea salt
• 1 pinch (1g) cracked black pepper
• 1/2 tsp (2g) garlic powder

Basic Tools Needed

You only need a few things for this. A baking sheet is essential to catch the melting cheese, and a butter knife or small spatula works for spreading. I suggest using a meat thermometer to ensure the turkey is safely heated.

Simple Assembly Steps

1. Preparing the Sourdough Foundation

Set your oven broiler to high. Apply 1 tbsp (14g) of softened butter to the bottom piece of sourdough and 1 tsp (5g) of mayonnaise to the top piece.

2. Layering for Maximum Melt

Build the sandwich by layering one provolone slice over the buttered sourdough, then adding 4 oz (113g) of thinly sliced turkey breast, 2 slices (30g) of heirloom tomato, and a final slice of cheese. Note: This "cheese sandwich" technique secures the turkey and tomato filling.

3. The High heat Broil

Transfer the open-faced sandwich to a baking sheet and broil for 2–4 minutes until the cheese is melted and sizzling and the bread edges turn golden. Verify the turkey has hit an internal temperature of 165°F (74°C).

4. The Final Touch

Take the sandwich out of the oven and immediately add 1/2 a sliced (50g) ripe avocado. Season the avocado with 1 pinch (1g) of sea salt, 1 pinch (1g) of cracked black pepper, and 1/2 tsp (2g) of garlic powder. Close the sandwich by carefully placing the mayonnaise-coated sourdough slice on top.

Fixing Common Issues

Broilers can be unpredictable since every oven behaves differently. The biggest risk is the bread charring before the cheese actually melts.

Preventing Burnt Edges

If your broiler is too aggressive, move the oven rack to the middle position. This gives the heat a few more inches to travel, allowing the cheese to bubble without the sourdough turning black.

Stopping the Avocado Slide

Fresh avocado is slippery. I like to press the slices slightly into the melted cheese before adding the top piece of bread to anchor them.

Fixing Cold Turkey

Thinly sliced deli meat heats quickly, but if the center feels cold, leave it under the broiler for another 60 seconds.

Swaps and Tweaks

You can change the protein or the cheese based on what's in the fridge. If you want another high heat meal, these Broiled Sausage Egg Pizzettes use a similar fast-melting technique.

Chef Note: For a bit of a zing, I like to mix a drop of hot sauce into the mayonnaise before spreading it on the top slice.

Storage and Reheating

Wrap the sandwich in foil and store it in the refrigerator for up to 2 days.

Do not freeze this meal. Once frozen and thawed, the avocado browns and loses its texture. For meal prepping, store the broiled turkey and cheese separately, then add the fresh avocado and tomato just before serving.

To reheat, set your air fryer to 350°F (175°C) for 3–5 minutes to restore the crunch of the sourdough, then keep heating until the turkey reaches 165°F (74°C) in the center, checked with a meat thermometer. Avoid the microwave, which makes the bread soft and rubbery.

Serving Your Sandwich

Cut the sandwich diagonally with a serrated knife to keep the fillings from squeezing out. It's great paired with a handful of arugula or a side of crisp cucumber slices. Since the sandwich is rich from the avocado and cheese, something acidic on the side helps balance the meal.

Critical Sodium Level