Easy Gluten-Free Keto Pecan Pie Bars

Preheat the oven to 350°F. Line a 1-quart rectangular baking dish (about 7×5 inches) with parchment paper.
In a medium bowl, combine the almond flour, butter, monk fruit sweetener, vanilla, and salt. Spread the mixture into the prepared pan and bake for 12 to 15 minutes, or until set.
In a small saucepan over medium heat, whisk together the butter and brown sweetener as they melt. Bring to a boil and allow to boil for 1 minute, then remove from the heat.
Beat the egg in a small bowl. Slowly stream in 1 to 2 tablespoons of the melted butter mixture to bring the eggs up in temperature without cooking them. Then slowly stream the warmed egg mixture into the rest of the melted butter mixture while whisking to combine.
Stir in the pecans and spread evenly over the baked crust. Return to the oven and bake for 15 to 20 minutes, just until the topping is set and browned.
Remove from the oven and cool on a rack for 15 minutes. Remove the bars from the pan and allow to cool completely on the rack. Cut into six even-size slices.