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Caramelized Onion, Arugula, & HerbedMayo Gourmet Grilled Cheese

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  • Author: wellness sleuth
  • Total Time: 6 hours 20 minutes
  • Yield: ingredients required per sandwich


Your cherished comfort meal has reached new heights! Imagine indulging in freshly baked sourdough bread, generously topped with luscious caramelized onions, a tantalizing herb-infused mayo, crisp arugula, and the irresistible richness of melted gruyere cheese, all expertly toasted in a sizzling skillet. Don't hesitate to prepare extra because these delights are simply irresistible!



3 T. mayonnaise
1 t. fresh parsley, chopped
1/4 t. dried oregano
2 slices sourdough bread
1 T. softened butter
2 T. caramelized onions, store bought or homemade
2 slices gruyere cheese
1/2 c. arugula leaves, roughly chopped (or baby arugula)
2 slices gouda cheese
1 c. cherry tomatoes, to serve


In a small bowl, combine the mayonnaise, parsley, and dried oregano.

Butter the outside of the slices of sourdough bread.

Assemble the sandwich by layering the herbed mayo, caramelized onions, gruyere, arugula, and gouda between the non-buttered sides of the bread.

Place the sandwich buttered side down on a non-stick frying pan and place over medium-low heat. Cook until golden-brown and crispy on both sides, approximately 6-7 minutes per side.

Serve alongside cherry tomatoes or a simple salad. 

  • Prep Time: 5 minutess
  • Cook Time: 15 minute

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