I don’t know about fancy, but lemon bars are always a hit! https://sallysbakingaddiction.com/lemon-bars-recipe/
Lemon bars you should make the day before and for decor you could add some fresh berries or edible flowers that match her colors.
This, and you can top them with powdered sugar and some lavender to make them fancy.
I was coming to say this! They're bright and refreshing, and saltwater\_drifter's suggestion about adding fruit that matches her colors is brilliant.
Yum. Great suggestion and OP I’ve never made anything from Sally’s Baking Addiction that hasn’t turned out, so if you need multiple items, look at the site for more ideas!
Yes! I’ve made lemon tea cake bars for 2 events recently. Easy and they look nice.
Piggy backing on this: there are some boxed premixed lemon squares you can buy these days that are absolutely delicious. I have used them on several occasions and people go crazy for them. And yes I lie and tell them I made them from scratch if they ask.