Cupcakes.

[Astrid]

No not yeast!

Looking at that ratios in the recipe, you could swap plain flour and the baking powder for 1 cup of self raising plus 1 cup of plain flour.
(You can make self raising flour by adding 2 teaspoons of baking powder to plain flour).

[Miss K]

This is the recipe I always use never had a drama you can actually use a fork to mix it up... Do you have a food processor or blender?

CUPCAKES:

1 1/2 cups self-rising flour

1 1/4 cups all-purpose flour

1 cup (2 sticks) unsalted butter, softened

2 cups sugar

4 large eggs, at room temperature

1 cup milk

1 teaspoon vanilla extract


Preheat oven to 350 degrees.

Line two 12-cup muffin tins with cupcake papers.

In a small bowl, combine the flours. Set aside.

In a large bowl, on the medium speed of an electric mixer, cream the butter until smooth. Add the sugar gradually and beat until fluffy, about 3 minutes. Add the eggs, one at a time, beating well after each addition. Add the dry ingredients in three parts, alternating with the milk and vanilla. With each addition, beat until the ingredients are incorporated but do not overbeat. Using a rubber spatula, scrape down the batter in the bowl to make sure the ingredients are well blended. Carefully spoon the batter into the cupcake liners, filling them about three-quarters full. Bake for 20–25 minutes, or until a cake tester inserted in the center of the cupcake comes out clean.

Cool the cupcakes in the tins for 15 minutes. Remove from the tins and cool completely on a wire rack before icing.