Preheat Oven to 350 Degrees Fahrenheit
Line Cupcake Pan with paper liners.
Put the Butter and Sugar into the Mixer and let ‘er rip on medium speed. You want it to be light and fluffy.. should take 5 minutes. You have time to read a magazine article, brew a pot of coffee, and yell at the kid who was supposed to take out the garbage but didn’t.
Add the Egg and Egg Yolk (save the egg whites for something else) Beat and scrape down.
Add the Lemon Zest and Vanilla. Beat and scrape down.
Combine the Baking Powder with the Flour… add to the butter mixture gradually (seriously… gradually, unless you happen to look really good in white powder)
Beat to combined….scrape… beat… DONE.
Fill the muffin liners with the batter… 1/3 to 1/2 full.. should make 12 to 15 muffins.
Top the batter with cherries.. I use 6 on each.. no reason, six just feels right. Set aside
Make the Streusel….
Put the flour and sugar in a bowl. Cut the butter into the bowl. Using your fingers…rub the butter into the flour. It will look like crumbles.
Put the streusel over the cherries.
Bake for 20 to 23 minutes… should be beginning to brown on top.
Cool on rack.