Preheat oven to 375 degrees. Place about 30 paper cupcakes liners into cupcake tins. Sift together dry ingredients. Flour, baking powder, soda and salt. In a separate bowl, mix together sugar and butter until fluffy. Add eggs one at a time, beating each egg until incorporated before adding the next. Add vanilla, lemon juice and lemon zest.
Add dry ingredients, alternating with buttermilk until all combined. Fill cupcake liners about 3/4 full. Bake at 375 degrees for about 17 minutes or until toothpick comes out clean. Cool on a baking rack
Frosting: Beat cream cheese with mixer until smooth. Slowly add lemon curd. Mix until well combined and fluffy. spread over cooled cupcakes.
Recipe Source: Favorite Family Recipes