My favorite way to use silken tofu is in a quick and easy chocolate pie.

2 cups chocolate chips
1 block silken tofu
1 teaspoon vanilla extract
1 tablespoon honey
1 prepared chocolate wafer crust
1/3 cup sweetened coffee (optional)
1/4 cup Nutella (optional)

Melt the chocolate using a double boiler or quick :30 bursts in the microwave (if you're using coffee or Nutella here, add it in this step). Stir in vanilla once chocolate is melted. Combine the tofu, chocolate mixture, and honey in a blender and mix until smooth. Pour the filling into the crust and refrigerate until set. You can't even taste the tofu!

I can usually get blocks of it at the Japanese market 2/$1. I've even had a nice cheap dinner of steamed rice and a block of tofu garnished with grated ginger, furikake and soy sauce. Mmm!