*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
**Nutrient information is not available for all ingredients. Amount is based on available nutrient data.
(-)Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.
Heat dates, 2/3 cup brown sugar, orange juice, and orange zest in a saucepan over low heat; cook, stirring occasionally, until dates have softened, absorbed the liquid, and mixture is like a paste, about 10 minutes. Remove from heat; stir in vanilla extract.
Stir oats, flour, 1 cup brown sugar, baking soda, and salt together in a bowl; cut in butter with a knife or pastry blender until mixture resembles coarse crumbs.
Lightly press 2/3 of the crumb mixture into the bottom of a 9x9-inch pan. Spread date mixture evenly over the crumb crust; sprinkle remaining crumbs evenly over the top of date mixture.
Bake in the preheated oven until top is golden, about 30 minutes; cool on a wire rack for at least 1 hour before slicing into bars.