Preheat oven to 350F degrees. Generously grease 7" by 7" baking pan.
In food processor, place 1 1/2 cups great northern beans, 1 cup peanut butter, 2 tablespoons honey, baking soda, and vanilla and puree until completely smooth.
Taste and add additional honey, one tablespoon at a time, pureeing and taste testing after each addition, as desired. Taste testing is necessary because both peanut butter and honey vary in sweetness. (I use only 2 tablespoons of honey because I prefer my bars to strongly taste of peanut butter.) Mixture should taste like rich peanut butter and not taste like great northern beans, honey, or overly sweet. Allow food processor to blend for 3 to 5 minutes without stop to emulsify.
Pour batter into deep bowl. Add eggs and combine with electric mixer. Add chocolate chips and combine with mixer.
Pour batter into greased baking pan. Evenly sprinkle kosher salt over top of batter. Bake until slightly firm on top and edges pull away from the sides of the pan for 20 to 25 minutes.
Allow to cool slightly and cut into 8 pieces. Eat while warm. Store in refrigerator or freeze. Peanut Butter Bars are still delicious when they are eaten slightly cold.