Pumpkin Doughnut Muffins

INGREDIENTS

3 cups

all-purpose flour, plus more for pan

2 1/2 tsp

baking powder

1/4 tsp

baking soda

1 tsp

salt

1/2 tsp

ground nutmeg

1/4 tsp

ground allspice

tablespoons(150 g) unsalted butter, room temperature

3/4 cup

dark brown sugar

large eggs, room temperature

1 1/4 cups

pure pumpkin puree

1/3 cup

buttermilk

1/2 cup

dark brown sugar

1/2 cup

all-purpose flour

1 tsp

ground cinnamon

1/3 cup

walnuts, chopped

3 tbsp

unsalted butter, chilled and diced

1/3 cup

oats

2 tbsp

unsalted butter, room temperature

2 oz

cream cheese, room temperature

1/8 tsp

vanilla extract

3 tbsp

powdered sugar

1/2 tsp

milk