Cook quinoa according to the directions on the package; let it completely cool.
In the meantime, make the dressing by combining olive oil, lemon juice, garlic, honey, dijon mustard, salt, and pepper in a mixing bowl or a jar; mix until thoroughly incorporated.
Place the chopped kale in a large salad bowl.
Pour HALF of the dressing over the kale; cover the bowl with plastic wrap and set aside for 15 minutes. NOTE that this will help to soften the kale.
Remove the plastic wrap; to the kale add the prepared quinoa, apples, grapes, diced pepper, and sunflower seeds.
Pour remaining dressing over the salad and toss gently to combine. Taste for salt and pepper and adjust accordingly.
Top with grated cheese.