A crisp, buttery everything bagel is filled with molten marbled cheese and sweet golden onions for a rich, savory grilled cheese with plenty of texture and flavor.
2large slices marbled cheesesuch as a Swiss-cheddar combination or another well-melting cheese
1/2cuponiondiced, approximately 1 medium onion
1tablespoonunsalted buttersoftened for spreading
1tablespoonunsalted butterfor caramelizing the onion
Instructions
Melt 1 tablespoon unsalted butter in a skillet over medium heat. Once the butter begins to foam, add the diced onion. Cook for approximately 5 minutes, stirring from time to time, until the pieces become tender and develop an even golden-brown color.
Transfer the caramelized onion to a small plate and allow it to cool slightly while preparing the bagel.
Cut the everything bagel horizontally into two equal halves. Spread the softened tablespoon of butter evenly over the cut surface of each half. Set both prepared pieces aside.
Keep the skillet over medium heat. Place one bagel half in the pan with its buttered surface facing downward. Press gently with a spatula so the surface makes even contact with the skillet.
Place one slice of marbled cheese over the bagel, distribute the caramelized onion on top, and cover the onion with the remaining cheese slice.
Position the second bagel half on top with its buttered side facing upward. Press the assembled sandwich lightly with the spatula so the layers settle together.
Cook the first side for another 2–3 minutes, or until the underside is crisp and deeply golden. Carefully turn the sandwich over with a wide spatula.
Cook the opposite side for an additional 2–3 minutes, until it is similarly golden and crisp and the cheese has melted completely. The finished cheese should be creamy, with a small amount beginning to escape around the edges.
Serve the Everything Bagel Grilled Cheese immediately while the bagel remains crisp and the cheese is hot and melted.
For a rich buttery flavor, Kerrygold or another high-quality unsalted butter may be used. A Swiss-and-cheddar marbled cheese provides excellent melting qualities, although another preferred melting cheese may be substituted.