Preheat oven to 350 degrees F. Line an 11 x 7 1/2 inch brownie pan with parchment paper.
In a large mixing bowl, place the cake mix, pudding mix, butter, and egg. Stir with a fork, may also use fingers to crumble, until ingredients are all moistened. They still need to be a little crumbly.
Save 3/4 cup of the mixture for later use. Press remaining dough into the bottom of pan.
Arrange the raspberries over the dough. Sprinkle the chips around the berries.
Crumble reserved dough over the top. Drizzle the sweetened condensed milk evenly over the mixture.
Bake for 28-35 minutes, or until crust is starting to brown and the center seems set when you slightly wiggle the pan. Do not overbake.
Remove from oven, place on a wire cooling rack, and cool about an hour.
Remove from the pan by parchment paper edges and place on a cutting board.
Allow to cool at least another hour, so they will cut easier. I trim the edges off before cutting, but this is not necessary of you do not want to.
Cut into bars of desired size. (They are very rich, so I cut mine small) I got 24 bars.
Transfer to serving platter.