Brie Cheese and Roast Beef Panini

When my mom and I visited one of our favorite restaurants for lunch, I decided to try the special of the day. A roast beef panini with brie cheese and caramelized onions on sourdough bread. After the first bite, I was in panini heaven. The tender beef, soft onions and melty brie cheese all harmonized in one truly amazing panini. As soon as I finished it I knew I had to make it for my husband. It's really an easy panini to make and results in a great and hearty lunch.

Ingredinets
Adapted from one of my favorite restaurants

4 slices sourdough bread (for 2 sandwiches)
1 small onion, sliced
aprox. 1/2 circle brie cheese cut into think chunch and with the rind removed
thinly sliced roast beef
aprox. 1 tbsp. extra virgin olive oil
pinch of sugar
butter, softened

Directions
In a small saucepan over medium heat, add about 1 tbsp extra virgin olive oil. Add onions and a pinch of sugar. Cook for about 10-20 minutes, stirring frequently, until onions are wilted and caramelized. Set aside.

Butter 1 side of each piece of bread, and on the other side add roast beef, caramelized onions and pieces of brie cheese. Add as much as you want to each sandwich. Top with other slice of bread, buttered side out.

Place each sandwich on a preheated panini maker, and cook for about 5-10 minutes, until the outside of the sandwich is golden brown. Remove, and using a serated knife cut sandiwich on an angle. Serve hot, and with horseradish if desired.