Butter Cake

Step 1
Preheat the oven to 350 degrees F (175 degrees C). Lightly grease an 8-inch square baking pan; line the bottom with parchment or wax paper, or dust lightly with flour.

Step 2
Sift flour, baking powder, and salt together in a large bowl.

Step 3
Beat sugar and butter together in a large bowl with an electric mixer until light and fluffy. Add eggs one at a time, beating well after each addition. Beat in vanilla extract.

Step 4
Add flour mixture in 1/2 cup batches, alternating with milk, beating batter briefly after each addition until just blended.

Step 5
Pour batter into the prepared pan.

Step 6
Bake in the preheated oven until a toothpick inserted into the center comes out clean, about 30 minutes. Let cool in pan for 10 minutes before inverting onto a wire rack to cool completely.