Mix Nuts & Seasoning: In a large bowl, combine almonds, macadamia nuts, and cashews. Add the soy sauce, ground ginger, and garlic powder. Stir well to coat all the nuts evenly.
Spread Nuts: Spread the seasoned nuts in a single layer on a lined baking tray.
Bake: Bake for 12-15 minutes, stirring every 5 minutes, or until the nuts are golden and fragrant.
Cool & Enjoy: Allow the nuts to cool completely before serving.