Creamy Cheddar Quinoa with Chicken and Spinach

In a medium pot, cook quinoa according to package directions. Meanwhile, in a large sauté pan over medium-high heat, heat oil. Season chicken with salt and pepper, then sear chicken on both sides until golden brown. Transfer to a plate. Return pan to medium heat. Add butter and sauté garlic and onions until softened. Add cream and chicken stock; bring to a boil and simmer until slightly reduced, 2 to 3 minutes. Stir in 1 cup cheese and spinach. Fold in quinoa and chicken, then top with remaining cup cheese. Cover pan and simmer until warmed through and cheese is bubbling, 3 to 4 minutes. Garnish with parsley and serve immediately.