Preheat oven to 375°F (190°C).
Cook the rice according to the box directions.
In a dutch oven, heat the olive oil over medium heat. Add the dried onion flakes and garlic flakes to the pan. Sauté for 1-2 minutes until fragrant. Stir in the turmeric and chili peppers (if using). Cook for another minute, stirring constantly. WGradually whisk in the chickpea flour. Cook for 1-2 minutes, stirring continuously to prevent burning. Gradually whisk in the water and coconut milk. Bring the mixture to a simmer, stirring constantly. Reduce heat to low, and simmer for 15-20 minutes, stirring occasionally. The sauce will thicken as it simmers. Season with salt and brown cane sugar, to taste. Adjust the consistency with a little extra water or coconut milk, if needed. When the sauce is done, set aside.
In a Dutch oven, combine chicken, and broccoli. Add a little olive oil and brown the chicken over medium heat. This will take approx 6-9 minutes.
Once the chicken is browned, pour the rice and prepared Korma sauce over the chicken and vegetables, making sure they are well coated. Stir to combine.
Cover the Dutch oven with a lid or foil and bake for 20-25 minutes, or until the chicken is cooked through and the sauce is bubbly.
Uncover and bake for an additional 5-10 minutes, or until the top is lightly browned and the sauce has slightly thickened.
Let the casserole stand for a few minutes before serving. Garnish with fresh herbs or cilantro, a drizzle of garlic sauce or chopped cashews, if desired.