Key Lime Gooey Bars Cat Helling
1 - 15.25 ox. box Key Lime Cake Mix
1 stick unsalted butter
1 egg, room temperature
1 lime - zested and juiced
1/3 cup white chocolate chips
1/2 cup sweetened condensed milk
lemon and lime zest for top of bars, if desired
Preheat oven to 350 degrees. Line a 9 x 9 inch baking pan with foil. Spray with cooking spray and set aside.
Beat butter with a mixer until soft and fluffy. Add cake mix, egg, lime juice and zest and continue beating until combined. Press about 2/3 of the mixture on to the bottom of the pan. Sprinkle white chocolate chips over the top of the chocolate. Crumble remaining cake mixture over top of the sweetened condensed milk, trying to spread it out as much as possible. Press lightly.
Bake for 29-32 minutes, or until edges start to brown. Let bars cool completely before cutting. Top with additional lime and lemon zest if desired. Store in an airtight container for up to a week.