Working with a stand mixer fitted with the whisk attachment, or in a large bowl with a hand mixer, beat the eggs and sugar together on medium-high speed for about 5 minutes (don’t skimp on the time), until the eggs are pale and the whisk leaves tracks. Beat in the vanilla. With the mixer on medium-low, scrape in the warm melted butter and chocolate and mix just until incorporated. Switch to a sturdy flexible spatula and, as gently as you can with this heavy batter, fold in the flour mixture, making certain that you get to anything that’s at the bottom of the bowl. When almost all of the dry ingredients are incorporated, add the chopped chocolate, nuts and cherries, folding and stirring until they’re mixed in. (Everything will be chocolate-covered except the cashews; their oil makes them somewhat resistant to coating.)