Combine oats, barley, and 1 1/4 cups water in a microwave-safe 4-cup bowl. Cover and refrigerate 4 hours or overnight.
Uncover bowl, and stir in salt. Microwave, uncovered, at HIGH for 6 minutes or until most of liquid is absorbed, stirring well after 3 minutes. Stir in 1/4 teaspoon cinnamon and nutmeg. Top with almonds and honey.