Preheat your oven to 350°, and line a 8x8 pan with parchment paper.
Heat the butter, Allulose,chocolate, and cocoa powder in short burst in the microwave until the chocolate and allulose are fully melted.
Add eggs one at a time, whisking until fully incorporated.
Whisk in the almond flour until the mixture is smooth. It will be very thick.
Add your brownie batter to the prepared pan, and the spoon the peanut butter on top, swirl it in with a knife.
Bake for 20 minutes until set. Sprinkle with sea salt, and enjoy!