Spray insides of 1 large (or 2 small) microwave-safe mugs with cooking spray.
Place dry ingredients and wet ingredients in your large mug. Using a fork or small whisk, mix everything into a smooth batter. (You can also mix everything in a bowl, then pour batter into mug(s)).
Stir in chocolate chips.
Microwave mug on high for about 1-1/2 to 2 minutes. (If necessary, continue to microwave cake in 30 second increments until desired level of done-ness is achieved.)
Allow cake to cool a few minutes, then spoon sliced strawberries and whipped cream on top.
Enjoy, immediately!
Recipe by Just Putzing Around the Kitchen at https://www.justputzing.com/2015/02/chocolate-strawberry-shortcake-mug-cakes.html