Heat mango puree in a pan. Keep stirring for a few minutes until it begins to thicken a bit.

Add salt and red chili flakes and switch off the gas. If the mangoes are sour, you can add some sugar to balance it off.

Apply the spicy mango spread on two pieces of "toasted" & "buttered" whole wheat bread.

Place fresh mango slices on top. Cover them with a toasted bread slice each.

Spicy mango sandwich is ready.