THM Peanut Butter Fudge Brownies - S.   2 T butter, 4 T pb, 1 cup xylitol, 1 t caramel flavoring, 1 t vanilla, 1 t salt, 3 eggs, 1.5 c. almond flour, 1 c. sugar free chocolate chips, 1/2 c. Hersheys chocolate syrup (opt.).   Cream butters and xylitol. Add flavorings, salt, and egg. Mix in almond flour. Stir in chocolate chips. Spread half batter in greased 9 x 13. Drizzle with chocolate syrup. Spread rest of batter on top then marble with knife. Bake at 350 degrees for 20-25 minutes.