Preheat oven to 350 F . Spray a large black mold "silpat (4 cavities) with butter spray and place onm sheet tray
2- Rough chop
the apple and cook in the brown butter, covered until soft . Allow to cool completely.
sliced apples with simple syrup.
4- Whisk togethet Sugar, Flour, baking soda, salt, walnut and nutmeg in a medium bowl .
together eggs, buttermilkl and butter ina small bowl . Gently fold in buttermilk mixture into flour mixture until just combined
; DO NOT OVER MIX .
Divide batter among cavities , filling each about three quarters full . Top each with an apple slice .
5- Bake until muffins are brown
around edges and spring back when touched . 16 to 18 minutes .
Let muffins cool slightly, about 5 minutes , before turning out of mold onto a wire rack .
Serve warm or at room temperature.