Chicken lentil puff pastry pie

Name: Chicken lentil puff pastry pie
Prep time: 1 h 30 min
Cook time: 30 min
Total time: 2 h
Cuisine: European, British
Ingredients: Puff pastry 18 sheets; Shredded chicken; Half onion; Two garlic cloves; Chopped mushrooms couple handfuls; Two table spoons mild curry powder; Stick butter for pastry; 400g lentils; 1.5 tablespoons flour; 1.25 cups chicken stock; Cup corn; Salt; Half bag baby spinach; Pepper