Homemade Little Debbie Cosmic Brownies

For the Brownies

unsalted butter (1 1/2 sticks), melted

large eggs

granulated sugar

light brown sugar, packed

coffee or water (coffee leftover from the morning brew is fine)

vanilla extract

unsweetened natural cocoa powder or dark cocoa powder (I used Hershey’s Special Dark)

instant espresso granules (make sure it’s instant so it dissolves), optional but recommended

all-purpose flour

For the Ganache

semi-sweet chocolate chips

half-and-half or cream (I used half-and-half)

M&M minis (they’re sold in small tubes and I used 1 1/2 tubes; regular size M&Ms may be substituted)