Classic Chicken Avocado Sandwich

PREPARATION

1. Heat a pot of salted water and bring to boil
2. Add chicken breast and cook on high heat until chicken rises to the top of the pot, lower heat and simmer
3. Remove chicken, check it is cooked through with no pink flesh in the middle
4. Set aside to cool, then shred with a fork
5. Slice the avocado and tomato generously
6. Toss spinach leaves in salt, pepper and vinaigrette 
7. Place spinach leaves on one slice of bread, top with the avocado and tomato, then layer on the chicken
8. Place remaining slice of bread on top and serve
9. Option to toast slightly in a sandwich press