In a food processor, combine pecans, oats, almond flour, cinnamon, and salt. Pulse until it looks like a fine, sandy flour.
Add the dates and water, and then blend again until a sticky dough forms — it should easily stick together when pressed.
Press this mixture firmly into the bottom of a 9x9 pan lined with parchment. Make sure the layer is even and compact (use the back of a measuring cup for extra smoothness).
Without washing the food processor, add the dates, water, vanilla, and salt. Blend until thick and smooth. Tip: If your dates are dry, add 1–2 teaspoons more water at a time until creamy.
Spread the caramel layer evenly over the crust.
Sprinkle pecan halves on top and gently press them into the caramel so they stick.
Freeze the bars for 30–60 minutes until firm enough to slice cleanly.
Lift the parchment from the pan, slice into squares, and enjoy!
Store in the fridge up to 1 week, or freeze up to 3 months. If frozen, let soften at room temp before eating.