Air Fryer Tomato and Onion Sandwich Recipe

**Servings:** 1

**Time:**

- **Total Time:** 20 minutes

- **Preparation Time:** 10 minutes

- **Overnight Preparation Required:** Not applicable 

- **Cooking Time:** 10 minutes

**Tools:**

- Air fryer

- Knife

- Cutting board

- Small bowl

- Spatula

**Ingredients:**

- **Bread:** 2 slices (your choice of bread)

- **Tomato:** 1 medium, sliced

- **Onion:** 1 small, sliced into rings

- **Olive Oil:** 1 tablespoon

- **Salt:** 1/2 teaspoon

- **Black Pepper:** 1/4 teaspoon

- **Mayonnaise:** 2 tablespoons

- **Mustard:** 1 teaspoon (optional)

- **Cheese:** 1 slice (optional)

- **Fresh Basil or Lettuce:** a few leaves (optional)

**Instructions:**

1. **Preparation:**

   - Preheat the air fryer to 375°F (190°C).

   - Slice the tomato and onion.

2. **Seasoning:**

   - In a small bowl, toss the onion rings with olive oil, salt, and black pepper.

3. **Cooking:**

   - Place the seasoned onion rings in the air fryer basket. Cook for 5-7 minutes, shaking the basket halfway through, until the onions are golden and slightly caramelized.

   - Optionally, toast the bread slices in the air fryer for 1-2 minutes.

4. **Assembling the Sandwich:**

   - Spread mayonnaise (and mustard, if using) on one side of each slice of bread.

   - Layer the tomato slices and caramelized onions on one slice of bread.

   - Add a slice of cheese if desired, and top with fresh basil or lettuce leaves.

5. **Finishing:**

   - Place the other slice of bread on top to complete the sandwich.

   - Optionally, press the sandwich lightly with a spatula and air fry for an additional 2-3 minutes to melt the cheese and warm the sandwich.

6. **Serving:**

   - Cut the sandwich in half and serve immediately.

**Health Benefits:**

- **Tomatoes:** High in vitamins C and K, potassium, and lycopene.

- **Onions:** Rich in antioxidants and vitamin C.

- **Olive Oil:** Contains healthy monounsaturated fats and antioxidants.

**Keywords:**

Air fryer sandwich, tomato and onion sandwich, easy recipe, healthy meal, quick lunch

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