Can I make the caramelized onions ahead of time?
Yes, caramelize onions up to 3 days ahead and store in an airtight container in the refrigerator. Reheat gently before assembling.
What temperature should I use to warm the sandwich?
Wrap in foil and warm in a 350°F oven for 8–10 minutes until the cheese is melted, or use a panini press or skillet over medium heat for 3–4 minutes per side.
Can I use a different type of bread?
Yes, crusty sourdough, ciabatta, or focaccia work well. Avoid soft bread, which won't hold up to the melted cheese and fillings.
What if I don't have fig jam?
Apricot jam, grape jam, or red pepper jelly are good alternatives that provide similar sweetness and complement the sharp cheddar.
How do I prevent the bread from getting soggy?
Spread fig jam and butter directly on the bread before adding fillings, and assemble just before warming to minimize moisture absorption.