1. Preheat oven to 350 degrees. 2. In large mixing bowl, combine the all-purpose flour, baking soda, and salt Add the oats and the sugar. Stir in the melted butter and mix well. Press half of the mixture into a greased 13x9x2 inch pan. Top with apple butter. 3. Sprinkle rest of the crumb mixture on top; press gently with a spoon. Bake at 350 degrees 55 minutes or till lightly brown. Cool and cut into bars.