I know ice cream in a crust will not a pie make! So, if youve any very easy ideas..please share!!

I haven't tried it, but don't see how it could work. You'd have to melt the ice cream to soft serve consistency, at least, to combine the juice, but without a bunch of sugar, I don't know how it wouldn't curdle, and you can't really melt that stuff. It's full of gums and gels and stuff to keep it from going icy, and feel good, without the fat and sugar that makes ice cream work.

I don't know about easy—depends how well you bake—but pavlovas can be made very low sugar (or with a sugar substitute, but you need a little something not just for sweetness but also to stabilize the meringue, and crystals like a sugar or salt work best, but only a tiny amount is needed. If you can deal with making them, they're impressive and delicious, no gluten, very low sugar, fun textures, and did I say impressive? You can top/fill with fruit, pastry cream, etc., but a flavored whipped cream would also be GF very low sugar, and you could make custard balls or something like that with the yolks, if fruit has too much sugar. I'm not sure I like this recipe, but see what's said about the sugar.

https://www.columbian.com/news/2016/nov/29/how-far-can-you-reduce-sugar-in-a-pavlova-surprisingly-low/#:~:text=The%20answer%3A%20surprisingly%20quite%20low,testing%20and%20reducing%20the%20sugar.

I commend you for making something that's inclusive of your granddaughter. No one wants to be the drag, especially at her age. I hope you find something that suits.

Is there anything here that can help? https://www.natashashome.com/gluten-and-sugar-free-dessert-recipes/

Instead of mixing lemon juice into the ice cream, what about lemon zest?

I have similar issues with both our families. I tried a new pecan pie recipe for Thanksgiving. I cobbled together three recipes to make a gluten-free, dairy-free, type 1 friendly recipe.

(keep meaning to write it down)...uses dates and a bit of maple syrup. Chia egg.

I like Islay's link. I'm going to try the lemon bars/squares recipe. Any bar can be made in a tart shell. I have a half dozen of these in different sizes and heights.

I use my two 8 inch the most.

A pumpkin pie can also be made to suit.

Maybe just have the ice cream on hand as an option.

I also like these for the holidays.

I have a file of about a dozen we like. I usually try and make at least three every year. Seems everyone has a favorite. Adding a lemon/ginger this year i know my MIL will like.

Recipes, here, WalderWellness

I make a Lemonade Cheesecake that is very good & easy. I make an almond meal crust & bake in the oven. Let it cool, for the filling beat 1 package of cream cheese with 1 individual package (for a water bottle) of Crystal Light lemonade mix & a freezer carton of sugar free cool whip. Mix well & spread in the crust. Top it with some frozen berries heated on the stove with a little lemon juice & thickened with a little corn starch. Spread over the filling. Every one loves it. It is gluten & sugar free.

Thanks do much everyone ! With so much on my plate ( yes to pun!) I’ve decided to serve the sugar free ice cream dressed up with a drizzle of chocolate and candy cane crumbs. I want to try some of your recipies when Im not feeling so rushed .

I like to add a drizzle of Amaretto or Frangelico to my ice cream, or other liqueurs.

Sounds like something everybody can enjoy with practically no effort. Have a marvelous time, enjoy your loved ones, and maybe make the fancier ones for a birthday or other celebration. The more you make, the more you'll gain expertise, and will have lots of options in your pocket in a few years.