Whisk the first 4 ingredients together in a bowl.
In another bowl whisk the eggs, milk and stevia.
Stir the wet into the dry and combine well.
Grease two shallow ramekins, I used 5 ounce quiche ramekins. Evenly pour the batter into each ramekin.
Microwave one at a time for 1 minute. May need 30 seconds more in center is still wet.
Allow to cool completely before removing to a serving platter.
Once cooled, make the peanut butter frosting in a stand mixer.
Spread half the frosting on the top of one cake.
Lay the second cake over the first cake and cover with the rest of the frosting.
Shave some sugar-free chocolate bar over the frosting if desired.
Enjoy with your sweetheart!