Birthday Cake Blondies

1 box funfetti cake mix
1/4 cup vegetable oil
1 egg
1/4 cup milk

Preheat oven to 350.
In a large bowl, mix together the cake mix, vegetable oil, and egg.
Slowly stir in the milk, stirring until just combined.
Spread the batter into a foil-lined 8x8 baking pan.
Bake for 20-25 minutes, or just until the top is golden brown. It may seem like they're not fully done in the center, but it's important to let them sit in the pan for 30 minutes before cutting them to let them firm up, while still remaining nice and gooey.
After you've let them cool for 30 minutes, cut into bars.