Chocolate Chip Power Bars

Preheat oven to 300 degrees F. Line a 9x5x3-inch loaf pan with foil, extending foil over the edges of the pan. Lightly coat foil with cooking spray; set aside. On a baking sheet, spread oats and walnuts in an even layer. Bake for 10 to 15 minutes or until oats and walnuts are toasted and aromatic, stirring occasionally. Cool oats and walnuts.

Increase oven temperature to 350 degrees F. In a medium bowl, stir together egg white, brown sugar, peanut butter, honey, vanilla, and salt. Stir in toasted oats, walnuts, flaxseed meal, flour, and chocolate pieces, stirring until combined.

Spread mixture into prepared loaf pan. Bake for 20 to 25 minutes or until firm in the center and light brown. Using the edges of the foil, lift the uncut bars out of the pan. While still warm, use a sharp knife to cut crosswise into 1-1/2-inch-wide bars. Let cool completely. Store in an airtight container.