Spiced Blueberry Peach Streusel Muffins

INGREDIENTS

7 tbsp

unsalted butter

1/3 cup

milk

large egg, at room temperature

large egg yolk, at room temperature

1 tsp

pure vanilla extract or vanilla bean paste

1 1/2 cups

white whole wheat flour

3/4 cup

granulated sugar

1 1/2 tsp

baking powder

3/4 tsp

sea salt

1/4 tsp

ground cinnamon

1/4 tsp

freshly grated nutmeg

1 cup

fresh blueberries

1 cup

fresh peaches, diced (see notes)

3 tbsp

unsalted butter, cold and chopped

1/2 cup

white whole wheat flour

3 tbsp

brown sugar

freshly grated nutmeg