Start by cooking your wild rice in water (or broth for more flavor) according to package instructions. This can take a while so be sure to prep it well ahead of time.
1 cup dry wild rice blend
Optional but encouraged: After cutting the chicken into bite-sized pieces, season it heavily with kosher salt and let it sit at room temperature for at least 20 minutes. This acts as a "dry brine" to season it from the inside out and will keep it moist.
1 lb boneless, skinless chicken breast, kosher salt
Then, preheat your oven to 375F.
Bring a large oven-safe pan to medium-high heat. Once hot, add enough oil to coat the bottom of the pan. Then, add onion, brussels sprouts, salt and pepper. Cook, stirring occasionally, for about 3-4 minutes. Add garlic and cook for 1 minute longer. Then, remove it all from the pan and set aside.
olive oil, 1 small yellow onion, 1 lb brussels sprouts, 3 garlic cloves, black pepper, kosher salt
Add a bit more oil to the pan. Then add chicken and spread out in the pan so that nothing is overlapping. Season with black pepper. Let cook undisturbed for 2 minutes. Flip and continue cooking for 2 more minutes or until golden on all sides. Remove chicken from the pan and place it into the bowl with the brussels sprouts mixture.
olive oil, 1 lb boneless, skinless chicken breast, black pepper
Reduce heat to low. Then, add butter and let it melt. Once melted, add flour and whisk constantly for 2-3 minutes until it's darkened in color slightly.
2 tbsp unsalted butter, 2 tbsp gluten free 1-to-1 flour
While whisking, slowly pour in the milk, followed by the broth. Then, add in the cheese and stir until smooth and melted.
1 cup milk of choice, ½ cup chicken broth, 1 heaping cup freshly shredded sharp cheddar cheese
Once melted, turn off the heat. Add in the dijon, paprika and season to taste with salt.
1 tsp dijon mustard, ½ tsp paprika, kosher salt
Add back in the chicken, brussels sprouts mixture and cooked wild rice. Stir until everything is combined.
Cover the pan with a lid or foil and place it into the oven to bake for 20 minutes. Let it cool for 10-15 minutes before digging in. Enjoy!