Pre-heat your oven to 300°F. Line a large baking sheet with parchment paper and set aside.
In a stand mixer fitted with the paddle attachment or in a large bowl using a hand mixer, beat the egg whites until they form stiff peaks.
Slowly add the sugar, beating continuously until the egg white are satiny and smooth. Beat in the vanilla and salt.
Stir in the cornflakes, chocolate chips, and coconut by hand until they are evenly mixed throughout the egg whites.
Drop by tablespoonful onto the prepared cookie sheet, leaving an inch between each cookie. To decorate, press a cherry half into the center of each cookie.
Bake in the oven for 25-30 minutes, until well dried out. Remove and let cool completely on the baking sheet. Remove and store in a sealed container layered between parchment paper for up to 5 days at room temperature or freeze for up to 3 months.