Cinnamon-Roll Cupcakes with a Sugar Streusel and a Cream Cheese Glaze

INGREDIENTS

package (15.25 ounces) yellow cake mix

package (3.4 ounces) vanilla pudding mix, (dry, not prepared)

large eggs, (at room temperature and lightly beaten)

1 cup

buttermilk, (check notes for substitution)

1/3 cup

vegetable oil

3/4 cup

full fat sour cream

1 tsp

vanilla extract

1/4 cup

brown sugar

1 tsp

ground cinnamon

1/2 cup

all-purpose flour

1/4 cup

brown sugar, (packed)

1/4 cup

unsalted butter, (softened)

1 tsp

ground cinnamon

1 oz

cream cheese (softened)

1/4 cup

butter, (softened)

1 cup

powdered sugar

1/2 tsp

vanilla

salt

1 tbsp

heavy cream or milk, (if needed)