Three delicious layers come together to make our favorite Three Layer Party Bars! A short bread cookie layer on the bottom, a middle chocolate layer and a meringue layer on top.
Preheat oven to 375 F.
With a stand mixer or with a hand mixer, cream the butter and sugar together, mixing well. Blend in 2 unbeaten egg yolks, vanilla and salt. Mix well. Add the flour, blending thoroughly. Press into the bottom of a 9x13 (or I used a square 8x8). Bake at 375 degrees for 15-20 minutes until lightly golden brown.
Take the baking dish out of the oven and sprinkle immediately with chocolate chips. Gently cover the glass baking dish with a clean hand towel over the top and let stand 5 minutes. The chocolate chips will melt from the heat of the bottom layer and you can now easily spread them over the bottom layer.
Spread the meringue over the melted and cooled chocolate layer.
Allow to cool, cut into squares and enjoy!