01 -
Set oven to 350°F. Line an 8x8 baking pan with parchment paper going both ways, leaving extra for easy lifting later.
02 -
Cream together sugar and butter until fluffy, about 3 minutes. Stir in flour and salt until it all comes together. Push the mix into your pan evenly.
03 -
Place in oven and bake for 15-18 minutes or until the edges start turning golden. Let it cool for a bit.
04 -
Whisk together the eggs and sugar for about a minute so it's a bit thick. Mix in the flour, grapefruit juice, and zest. Pour this over the warm crust.
05 -
Bake for 18-20 minutes or until firm and golden at the top. Allow to cool completely before slicing into 16 pieces.