Heat oven to 275°F and line a rimmed baking sheet with parchment.
Whisk egg white and vanilla in a large bowl until foamy and light.
Toss almonds into the foamy mixture until every nut is lightly coated.
Stir sugars, cinnamon, salt, and nutmeg in a separate bowl until evenly mixed.
Sprinkle the cinnamon sugar over almonds and fold until no dry spots remain.
Spread almonds on the sheet in a single layer without crowding.
Bake 20 minutes, stir and spread again, then bake 18–22 minutes until dry and crisp.
Cool completely on the pan, break apart any clumps, and store airtight.
Notes
Variation: Add a pinch of cayenne for a sweet-heat finish, or swap half the cinnamon for pumpkin spice. Storage: Keep in an airtight jar at room temperature for up to 2 weeks; re-crisp on a sheet pan at 300°F for 5 minutes if needed.This recipe is an original creation inspired by classic Cinnamon Roasted Almonds Recipe flavors. All ingredient ratios and instructions are independently developed.