01 - Preheat oven to 350°F. Line an 8-inch square baking pan with parchment paper, leaving an overhang for easy removal.
02 - In a medium saucepan over medium heat, combine chopped dates, orange juice, orange zest, cinnamon, ginger, nutmeg, and salt. Cook, stirring frequently, until the dates soften and the mixture becomes thick and jammy, about 7 to 10 minutes. Remove from heat and allow to cool slightly.
03 - In a large bowl, combine rolled oats, flour, brown sugar, baking soda, and salt. Add melted butter and vanilla extract, stirring until coarse, moist crumbs form.
04 - Firmly press approximately two-thirds of the oat mixture evenly into the bottom of the prepared pan to create an even base layer.
05 - Spread the warm date mixture evenly over the oat crust layer.
06 - Scatter the remaining oat mixture over the date layer, pressing gently to adhere.
07 - Bake in the preheated oven for 25 to 30 minutes or until the top is golden brown.
08 - Allow the bars to cool completely in the pan before lifting out using the parchment overhang and cutting into 16 squares.