Preheat the oven to 325°F and line 13x9-inch metal baking pan with parchment paper leaving an overhang on the two longer sides of the pan. Spray the parchment paper with cooking spray.
Spread the oats and almonds on an unlined baking sheet. Bake them for 10 to 12 minutes, stirring occasionally, until lightly browned. Transfer the oats and almonds to a large bowl and let them cool completely. Once cooled, stir in the flaxseed meal and mini chocolate chips.
In a separate medium bowl, whisk together the brown sugar, salt, honey, olive oil and egg whites. Pour the mixture over the oats, stirring until combined.
Transfer the mixture to the prepared pan, and using wet hands or a flat spatula, firmly press it into even layer. (See Kelly’s Notes.)
Bake until dark golden on top, 30 to 35 minutes. Remove the pan from the oven and allow the bars to cool completely in the pan before using the parchment paper overhands to transfer the sheet of granola onto a cutting board.
Slice the granola into bars and serve.