Roast almond for desserts I want to bake a cake that mimics the Sahne Nuss chocolate bar from Nestle. So my plan is a chocolate cake filled with a chocolate ganache with pieces of almond in it.

My question is: should I roast the almonds before adding into the ganache? I'm looking for a crunchy texture for the almonds.
Yes, roast the almonds. Be careful not to burn them. You can roast them in a dry skillet, tossing them frequently until aromatic and slightly darkened, or in the oven for maybe 25 minutes at 200°F (95°C).