Grilled Cheese with Apple and Rosemary Walnut Butter

1. In a small bowl, mix the butter with the rosemary and walnuts.
2. Spread 1/2 teaspoon of butter onto one side of each slice of bread.
3. Set one slice of bread on your work surface, butter side up. Layer the slice of bread with the sliced cheddar and apple and top with the other piece of bread, butter side facing in.
4. Heat a skillet over medium heat and spread one side of the outside of the sandwich with some of the butter mixture.
5. Put the sandwich butter side down in the pan and cook, 3-5 minutes until the first side is golden and the cheese is beginning to melt. Butter the top side of the sandwich before flipping over.
6. Cook on the second side for another 3-4 minutes until golden brown.
7. Serve warm.