Preheat your oven to a cozy 350°F (175°C). Line a baking sheet with parchment paper – this makes cleanup a breeze!
In a large bowl, combine the softened butter, sweetener, room-temperature sour cream, and eggs. Use an electric mixer to beat them until wonderfully smooth.
Now, gently add the hot water, almond flour, cocoa powder, chocolate bone broth powder (or protein powder), coconut flour, baking powder, and vanilla extract. Mix everything just until it’s combined – be careful not to overmix, as this helps keep your cookies light and fluffy!
Scoop 18 generous portions of cookie dough onto your prepared baking sheet. Pop them into the oven for 15-20 minutes, or until they feel firm when you lightly press them. Let them cool completely on the baking sheet.
While the cookies cool, grab another bowl and beat together the softened cream cheese, butter, and powdered sweetener until you have a smooth, creamy, and delightful filling.
Take one cooled cookie and spread a lovely dollop of the creamy filling onto its flat side. Top it with another cookie to create a delicious sandwich. Repeat with the remaining cookies and filling, and get ready to enjoy your homemade, healthy whoopie pies!