Lay flat the slices of bread and flatten them out using a rolling pin.
Boil the lentils till soft and then blend them in a mixie.
Mix the blended lentils with mayonnaise and add seasonings.
Blanch the spinach and cool in ice water.
Spread the lentil spread on the flattened bread.
Put grated mozzarella cheese and blanched spinach.
Carefully roll the bread In a cigar shape.
Heat butter in a frying pan and just toast the bread roll till golden and crispy.
While blanching spinach or any green vegetable, make sure to never cover the boiling vessel with a lid. The enzymes released by a green vegetable during this period can blacken the green colour.