Bundt cake
2½ cups all-purpose flour
1½ tsps baking powder
1 tsp baking soda
½ tsp salt
½ cup unsalted butter (room temperature)
1 cup peanut butter
1 cup light brown sugar (packed)
½ cup granulated sugar
2 tsps vanilla extract
3 large eggs
1 cup milk
3 Tbsp cocoa powder (I used 2 Tbsp black cocoa and 1 Tbsp Dutch-processed)

Candied peanuts
1 cup peanuts (roasted, unsalted)
¾ cup sugar
3 Tbsp water
¼ tsp kosher salt

Marshmallow glaze
2 cups marshmallow fluff (store bought or homemade)
½ cup icing sugar
2-3 Tbsp cream