To Make the Fluffy Keto Pancakes:
In a medium bowl, whisk together the almond flour, oat fiber, baking powder, and salt. Set this aside.
In a separate clean bowl, use a hand mixer to whip the egg whites until soft peaks form. Gently set these aside.
In a third bowl, combine the egg yolks, Swerve, heavy cream, vanilla extract, and coffee extract. Beat with a hand mixer for about 2 minutes until well blended.
Carefully fold the whipped egg whites into the wet ingredient mixture.
Gradually add the dry ingredient mixture to the wet mixture, stirring until just combined. The batter should be slightly loose but not watery; add a tiny bit more heavy cream if it's too thick.
Heat a skillet over low heat and add a little avocado oil (or clarified butter/ghee). Pour about 2-3 tablespoons of batter per pancake to make them roughly 3-4 inches wide.
Cover the skillet with a lid and cook on low heat for a few minutes per side until golden brown and cooked through. This slow cooking with a lid is key for fluffy results! Once done, remove and set aside.
To Make the Creamy Mascarpone Filling:
In a bowl, whip the cold heavy cream until stiff peaks form. Set aside.
In a separate bowl, beat the mascarpone cheese, Swerve, and vanilla extract until smooth.
Gently fold the whipped heavy cream into the mascarpone mixture until it's well combined and creamy.
To Assemble Your Tiramisu Pancakes:
Place one pancake on a plate.
Lightly brush some of the room temperature strong brewed coffee over the pancake so it soaks in.
Spoon a dollop of the creamy mascarpone filling on top.
Lightly sprinkle some unsweetened cocoa powder over the cream.
Place another pancake on top and repeat the coffee, cream, and cocoa layering process. Continue until you've built your desired stack!