“I’m from Ohio and did indeed grow up eating this!”

Thaw frozen pie crusts or prepare homemade crust.
Press one crust into a 9-inch pie dish, pricking the bottom.
Mix Lemon Filling:

Combine lemon slices, sugar, and salt in a bowl. Let sit for 10-15 minutes.
Prepare Egg Mixture:

Whisk together eggs, flour, and vanilla in a separate bowl.
Combine and Pour:

Pour egg mixture over lemon mixture and fold gently.
Pour the combined mixture into the pie crust.
Cover and Bake (Optional):

Optionally, cover with a second crust, seal edges, and cut slits in the top.
Bake for 45-50 minutes, or until filling is set and crust is golden.
Cool and Serve:

Let the pie cool completely before serving.