1 can (14 oz.) sweetened condensed milk
4 egg yolks
1/2 cup fresh lemon juice (3-4 lemons)
2 tsp. lemon zest
1 graham cracker or nilla wafer crust

  • whisk together sweetened condensed milk, yolks, lemon juice, and zest
  • pour into pre-baked pie crust, or divide into 12 muffin-tin wells for mini pies
  • bake for 15 minutes at 350°F
  • cool to room temperature, then chill for 1-2 hours

source: https://artofnaturalliving.com/key-lemon-pie/#recipe

3/17/25: made this for pi day this year, as mini pies with nilla wafer crust, and they were fantastic.