INGREDIENTS
•
1 15.25 oz box Key Lime Cake Mix (I used PIllsbury)
•
1 stick unsalted butter, softened
•
1 egg, room temperature
•
1 lime, zested and juiced
•
2/3 cup white chocolate chips
•
2/3 cup sweetened condensed milk
•
lemon and lime zest for top of bars, if desired