Preheat oven to 275°F (135°C).

In a large mixing bowl, combine the oats, chopped dates, chia seeds, pumpkin seeds, pecans, cinnamon, salt, and milk powder. Stir until evenly mixed.

Add the maple syrup, egg whites, olive oil, and vanilla extract to the same bowl. Stir until all the dry ingredients are well coated.

Spread the mixture in a single, even layer on a baking sheet.

Bake for about 45 minutes, or until the granola is lightly browned.

Remove from the oven and let cool completely on the tray for about 30 minutes.

Once cooled, break into large chunks. Store in an airtight container.