Instructions:
- Preheat the oven to 350 degrees.
- Line an 8×8 baking pan with foil and spray with nonstick baking spray.
- Mix together the flour, powdered sugar, and butter until it is crumbly.
- Press into the bottom of the prepared pan.
- Bake for 20 minutes.
- While the crust is baking, place the sugar, flour, salt, key lime juice, zest, and eggs in a blender.
- Pulse until frothy.
- Add a little bit of green gel food coloring to brighten the color more.
- As soon as the crust is finished, pull it out and pour the key lime filling on top. You may need to pulse it one more time before doing this.
- Bake again for 25 minutes.
- Remove and let cool completely.
- Sprinkle with powdered sugar and cut into 16 bars.