Reesie's Meatloaf Panini

1 piece of leftover meatloaf, cut in half so it fits on bread
2 slices marble rye bread
2 handfuls of spinach
2 slices of swiss cheese
mustard, to taste

Microwave meatloaf slice for 1-2 minutes until warm.  In a medium frying pan, over medium low heat, put a small of butter and melt. Add bread to pan, top each slice with cheese. On the side of your bread, wilt your spinach and add to the top of your bread slices. Toast in the pan until lightly toasted and cheese is melted. Add meatloaf slices. Top with a dollop of mustard, or as much as you would like. Close sandwich and serve. 

Serving Suggestions:
- Add a slice of tomato right before you close your sandwich. 
- Serve with fries if eating for supper. 
- Serve with baked pita chips, or any kind of chip you like.