Soften the leek
Heat garlic-infused oil in a non-stick pan over medium heat.
Add sliced leek and cook gently for 3–5 minutes, until soft and fragrant but not browned.
Add the chicken
Add the diced chicken and cook for 5–7 minutes, stirring occasionally, until the chicken turns white and begins to firm.
Make the light sauce
Sprinkle the gluten-free flour over the chicken.
Stir well to coat.
Slowly pour in the rice milk, stirring continuously to avoid lumps.
Simmer for 3–4 minutes until the sauce thickens.
Finish the sauce
If using, stir in 1 tbsp cream for extra richness.
Simmer 1 more minute.