Slice sausage links into 1/3 inch rounds.

Thinly slice onion and apple.

In a nonstick or cast iron skillet, bring 2 tablespoons of oil to medium heat. Add onion and apples and sprinkle in cinnamon, salt, and pepper. Sauté 4-5 minutes, then add sausage rounds. Continue cooking for 5 minutes, then remove the skillet from the heat. Empty the skillet and set the sautéed ingredients aside.

Spread a thin, even layer of mayonnaise on one side of each slice of bread.

Using the same skillet, bring 2 tablespoons of oil to medium heat. Place bread mayonnaise side down.

Add 1 slice of havarti, then spoon the desired amount of sausage/onion/apple mixture over top. Sprinkle chunks of goat cheese, then add arugula, followed by 1 more slice of havarti. Top with the other slice of bread, mayonnaise side facing up. Cook 2-5 minutes, checking the bottom slice occasionally to prevent burning.

Flip the sandwich and cover the pan – we used a lid from a larger pot, as our skillet doesn't have a lid. This helps the cheese to melt more quickly. Cook 2-5 more minutes until the bread is golden brown.

Slice and enjoy!