Moist Chocolate Cake In Microwave 1/2stick of butter 1/2cup sugar 2eggs 1cup chocolate syrup 1/2cup flour 1/2teaspoon baking powder 1/2teaspoon vanilla Cream butter, sugar; add eggs and beat until fluffy. Add syrup, dry ingredients and vanilla. Beat until blended. Pour into 8-inch glass baking dish. Cook, uncovered, for 7 minutes, 30 seconds on high in microwave oven. FOR FROSTING: While cake is warm, spread 1 cup miniature marshmallows over top. In microwave, melt 2 tablespoons butter. Add 1/2 cup sugar and 2 tablespoons evaporated milk. Mix. Cook uncovered on high for 1 minute. Quickly mix in 1/4 cup chocolate chips and 1/2 teaspoon vanilla. Pour over warm cake and blend with the marshmallows.