Line a 12-hole deep muffin tin with some non-stick paper cases or folded squares ... to each cupcake. You can also flavour the cakes with ½ tsp vanilla extract instead of lemon zest and use ...

Line an 8- or 9-inch square pan with two perpendicular strips of parchment paper, leaving some overhang so baked lemon squares can be easily lifted from pan. In a large bowl, whisk together flour ...