Ingrédients
Method
Preparation
- Heat oven to 350°F (175°C). Grease an 8-inch square pan and line with parchment for easy lift-out.
- In a large bowl, beat butter and sugar until pale and fluffy. A whisk works fine, a mixer is faster.
- Whisk in eggs one at a time, then vanilla.
- Sprinkle flour, baking powder, baking soda, and salt over the bowl. Add milk. Stir gently until just combined. Do not overmix.
- Fold in zest or chips if using. Spread batter into the pan. Tap once to release bubbles.
Baking
- Bake for 24 to 30 minutes until the top springs back and a toothpick comes out clean or with a few moist crumbs.
- Cool for 15 minutes, then frost or dust with powdered sugar. Slice and enjoy warm or at room temperature.
Notes
For best results, measure flour lightly to avoid a dense cake. It can be made ahead and freezes well without frosting. Room temperature ingredients lead to a creamier batter.
