Press the base into a greased and parchment paper lined quarter sheet pan, smoothing with a spatula to get an even layer.
Chill briefly while making the 2nd layer.
Chocolate Peanut Butter, 2nd layer
For the second layer, melt 12 oz Valrhona Bahibé 46% Dark Milk Couverture Chocolate Feves in a microwave safe bowl on 20-30 second intervals just until it is melted.
Add the crunchy peanut butter and soft butter and mix well.
Pour over the base and smooth with an offset spatula.
Return to the refrigerator while making the 3rd layer- but no more than 30 minutes. The second layer should be set but not too cold otherwise the 3rd layer will not adhere.
Dark Chocolate Top layer
For the 3rd layer, melt 5.5 oz Valrhona Guanaja 70% Dark Couverture Chocolate Feves in the microwave.
Combine the cream and 1 tsp Allez Belgian Glucose Syrup in a pot and bring to a boil.
Slowly pour the hot liquid over the melted chocolate, mixing well with each addition.
Once all the liquid is incorporated, mix with a immersion blender, taking care not to add air bubbles.
Pour on top of the 2nd layer and smooth with an a spatula. Chill for 2 hours before covering (if using plastic wrap, make sure the plastic does not touch the surface of the top layer).
Leave overnight to ensure ease in cutting. Reserve in the refrigerator covered to prevent the top layer from drying out and cracking.
Notes
When ready to cut the bars, use a warm knife (run under hot water and dry between cuts) and allow the bar to set out at room temp for 15-30 minutes before cutting. This will prevent the layers from cracking/separating as you cut and cut more easily.