Combine quinoa, 2 cups of water, and ½ tsp. salt in a medium pot. Bring to a boil, cover, and reduce the heat. Simmer for 15 minutes. Remove the pot from the heat and let it sit, covered, for 5 minutes. Fluff with a fork.Place broccoli in a large bowl and spoon quinoa overtop. Toss to combine, and let sit for 15 to 20 minutes. (The residual heat of the hot quinoa will help steam and slightly soften the broccoli.)
Meanwhile, prepare Honey-Mustard Dressing by combining all ingredients in a glass jar or large glass measuring cup; shake or whisk well to combine.
To the broccoli-quinoa mixture, add apple, cheese, almonds, and dates. Pour dressing overtop and toss to combine.
