Preheat oven to 350 degrees F and line a baking sheet with parchment paper or silicone mat.
In a medium bowl, whisk together all ingredients except sprouts until completely smooth. It should be the consistency of queso dip, but if it's too thick, add one tsp. of water at a time until desired consistency is reached.
Toss sprouts in the cheese sauce until evenly coated, then spread them out on the baking sheet, cut side down.
Bake for about 8 mins, then quickly flip the sprouts over (I used my fingers, carefully!) and return them to the oven for 4-5 mins. They should be golden and dry to the touch.
Allow sprouts to cool about 3 mins, then serve immediately.
Notes
If you try these and find that your sprouts taste bitter, it means you overcooked them. Try the recipe again at a slightly lower oven setting (oven temps. vary), or bake a shorter amount of time.
This cheesy sauce is also great on roasted cauliflower, broccoli, and potatoes!
Recipe by Daily Dose of Greens at https://dailydoseofgreens.com/2017/06/02/cheesy-roasted-brussels-sprouts/