The key to this frosting is beating the butter for five full minutes.
Once the butter is whipped, add the cream cheese.
Add the vanilla paste.
Add salt.
Add heavy cream, if needed. If you are going to pipe scoop out with large spoon, hold sideways over bowl. Frosting should plop back into bowl in about a second or two. If it doesn't you will need to add a little heavy cream.
Add in peanut butter. Mix until well incorporated.
Refrigerate or freeze until ready to use. If you take out from refrigerator, give it a chance to come down to room temperature. You may want to use your mixer to remix.
Keto Chocolate Cake
Prepare
Preheat oven to 325 degrees F. convection oven or 350 F. regular oven (180 C.)
Prepare cupcake liners with baking spray.Prepare Cake pans with parchment paper and butter or cooking spray.
Cake Dry Instructions
Mix all dry ingredients together, including the Swerve (powdered erythritol). Set aside.
Cake Wet Instructions
Mix eggs in mixer (or with hand mixer) until thoroughly mixed well on medium high speed.
Stream in oil slowly while continuing to mix.
Mix sour cream with milk with a fork. Add to wet ingredients.
Mix in coffee and vanilla.
Turning the mixer to low, add dry ingredients just until mixed. Finish folding in with spatula. You don't want to over-mix. Pour into prepared pans or cupcake liners.
Bake cupcakes 20 to 25 minutes. Cupcakes are done when the internal temperature is 205 F.
Bake an 8 inch layer cake 25 to 30 minutes. Cake is done at 210 degree. F.
Bake three six-inch layer cakes 23 to 26 minutes. Cakes are done at 210 degrees. F.
You can actually hear when your cake it done. If it's crackling it's still cooking off moisture.
Cool cakes before frosting.
If you decide to use a piping bag, make sure frosting is soft enough. If it's not moving through the bag easily, add a little hot water or milk a tablespoon at a time. I use a 1M piping tip.
Notes
I like Better Body Foods Cacao powder, which gives a strong chocolate taste, You may need more cocoa powder with other brands. I suggest microwaving a teaspoon of batter to see if it tastes chocolatey enough.