Super Easy Key Lime Pie

This recipe is a big hit in my family. I can never just make one pie at a time, so this recipe is for two pies.

2 graham cracker pie crusts
3 -14 oz. cans sweetened condensed milk
8 oz. key lime juice
8 oz. sour cream

Mix all ingredients and pour into pie shells. Bake at 350 for 6 minutes. Do NOT brown. Chill for 2 hours before serving. Optional: serve with cool whip or whipped cream.