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Instructions:
- Season the chicken breasts evenly with salt, black pepper, and Italian seasoning.
- Heat olive oil in a skillet or grill pan over medium-high heat.
- Grill the chicken for 5 to 6 minutes per side until golden and cooked through. Remove from heat, rest briefly, then slice.
- In a small bowl, mix the softened butter with minced garlic until well combined.
- Spread garlic butter on one side of each slice of bread.
- Toast the bread butter-side down in a skillet until golden and crisp.
- Spread mayonnaise or garlic aioli on the unbuttered side of each toasted slice.
- Layer mashed avocado if using, sliced grilled chicken, lettuce, and tomato.
- Top with remaining bread slices, slice in half, and serve warm.
Variations
- Add a slice of provolone, mozzarella, or Swiss cheese for extra richness.
- Swap chicken for grilled turkey or rotisserie chicken.
- Use whole wheat or multigrain bread for a heartier sandwich.
- Add crispy bacon for a classic club-style twist.
Tips
- Butterflying the chicken helps it cook evenly and stay juicy.
- Toast the bread slowly over medium heat for the crispiest texture without burning.
- Season tomatoes lightly with salt to enhance their flavor.
- Serve immediately while the bread is warm and crisp for the best experience.