An EASY five-ingredient recipe for soft and chewy strawberry bars studded with white chocolate chips and spiked with sweetened condensed milk for the GOOEY win!!
1. Preheat oven to 350°F and line a 9×9-inch pan with aluminum foil and spray with cooking spray; set aside.
2. Add the butter to a large bowl and beat with a handheld electric mixer on medium-high speed until smooth and creamy.
3. Add the cake mix and egg, and beat on low speed to combine. The batter will be very thick; keep beating until it forms a tacky, thick dough.
4. Add between half and two-thirds of the dough to the prepared pan to form an even, smooth base layer. Use a spatula or hands sprayed with cooking spray.
5. Evenly sprinkle the white chocolate chips over the dough.
6. Evenly drizzle about 60% of the can of sweetened condensed milk (approximately 8 ounces) over the white chocolate chips.
7. Add the remaining dough in 1-inch pieces over the condensed milk, lightly pressing it down. It’s okay if there isn’t complete coverage.
8. Bake for 27 to 30 minutes or until edges are set and the center is mostly set but slightly jiggly. Remove from oven when edges turn light golden brown.
9. Allow the pan to cool on a wire rack for at least 2 to 3 hours or overnight, until bars have firmed up enough to cut.
Bars are best fresh but will keep airtight at room temperature for up to 5 days or in the freezer for up to 3 months.
Line your baking pan with foil for the easiest cleanup.
Let bars cool fully before cutting to ensure clean slices and gooey texture.