Tropical Bananas Foster Waffles

Combine yeast and warm water in a 1-cup glass measuring cup; let stand 5 minutes.

Meanwhile, combine flour and next 3 ingredients in a large bowl; make a well in center of mixture. Whisk together egg yolks, buttermilk, and next 2 ingredients. Whisk in yeast mixture; add to dry mixture, stirring just until moistened.

Beat egg whites at high speed with an electric mixer until stiff peaks form. Fold beaten egg white into batter. Cook in a preheated, oiled waffle iron until done.

Dollop whipped cream onto waffles. Top with Caramelized Bananas, and sprinkle with coconut and nuts.