Step 1

Preheat the oven to 350°F and prepare two muffin tins with cooking spray or cupcake liners.

Step 2

Whisk together the cake mix, flour, and lemon zest in a large mixing bowl.

Step 3

Use a hand or stand mixer to beat in the eggs, half and half, and oil just until combined. Beat only for about 1 minute or until everything is combined but slightly lumpy.

Step 4

Scoop the muffin mix into the prepared muffin tins, filling each about ⅔ full with batter.

Step 5

Bake for 18 to 22 minutes or until golden brown and a toothpick inserted into the center comes out clean.

Step 6

Cool for 5 minutes before removing from the muffin tins and allowing them to cool on a cooling rack.

Step 7

To make the glaze, whisk together the powdered sugar and lemon juice until a thin glaze forms.

Step 8

Drizzle over the muffins and top with lemon zest, optional.