I'll ask my wife for the recipe.
Edit: She says, "The recipe is from Bon Apetit. I changed the recipe to be gluten-free."
https://www.bonappetit.com/recipe/squash...onion-tart
Edit: She says, "The recipe is from Bon Apetit. I changed the recipe to be gluten-free."
https://www.bonappetit.com/recipe/squash...onion-tart