Preheat oven to 350°F. Grease or line a 9 x 9 baking pan with parchment paper. Cream butter and sugar until light and fluffy. Add in flour, egg, curd and lemon juice and mix on medium speed until smooth dough forms.
Scoop dough into 9 x 9 baking pan and spread evenly across the entire pan with a spatula. Dough will be very sticky. Don't worry if you can't smooth out top because once it begins to cook in the oven, it will smooth out. Bake 25-30 minutes until blondies turn a golden brown and toothpick inserted comes out clean. Let blondies cool completely in the pan before cutting and serving.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.