As a carnivore, here's the closest thing I have to a desert - it's an Egg Custard dish that I customized.

Here's mine, very simple:

6 eggs, beaten 2 cups heavy whipping cream

Bake for about 45 minutes until the top is browned and it doesn't jiggle.

This works great as a desert, usually with extra heavy whipping cream poured on top, sometimes a couple blueberries. Other family members will pour maple syrup on it.

The original recipe substituted milk for the cream, and also added 3/4 cup sugar.