Very Vanilla “Twinkie” Bundt Cake

INGREDIENTS

3 cups

cake flour

1 tbsp

baking powder

3/4 tsp

salt

6 tbsp

butter, softened

1 tbsp

vanilla extract

1 tsp

vanilla bean paste {optional}

2 cups

sugar

1/2 cup

vegetable oil

eggs + 4 egg yolks

1 cup

buttermilk

!For Marshmallow Filling

1 stick

butter, softened

1 7.5 ounce container

of marshmallow creme

1 tsp

vanilla extract {OR vanilla bean paste if you like the little specks like I do.}