Mix wet: Cream butter with sugar, brown sugar, maple syrup, and soluble corn fiber. Beat in egg and vanilla.

Mix dry: Stir oats, flour, baking soda, and salt. Add to wet mixture until combined. Fold in chocolate chips and nuts.

Shape: Scoop about 1 1/2 T dough; roll into balls and place on a lined baking sheet, spaced apart. Flatten lightly if desired.

Bake: Bake at 350°F (175°C) about 10 minutes until edges are set and lightly golden. Cool on the sheet a few minutes, then transfer to a rack.