Whisk together the coconut milk, mango juice, ginger, curry, and salt in the bottom of a 7-quart slow cooker. Stir in the sliced carrots.: The mixture should look silky and fragrant, with the pale yellow of the coconut milk blending into the golden mango juice; stirring releases bright aromas of citrusy green curry and warm ginger. You will notice a thin, glossy surface and a pleasing perfume that hints at the depth to come. This initial emulsion matters because it creates a uniform cooking environment for the chicken , allowing flavors to penetrate evenly; if the liquids are not well combined, pockets of concentrated curry can form and lead to uneven seasoning. A common mistake is skimping on whisking which leaves lumps of curry paste, so take an extra minute to whisk until smooth and aromatic. When you stir in the sliced carrots , they begin to absorb flavor right away and will soften as the sauce slowly simmers.
Place the chicken breasts in the milk mixture and spoon the sauce over the top. Cover and cook on low until the chicken is tender and cooked through, about 5-6 hours.: As the chicken nestles into the sauce, you'll see the liquid coat each piece; this contact is what infuses the meat with mango and coconut flavor while the slow cooker keeps temperatures gentle. The sauce will gently ripple around the chicken during cooking, and after a couple of hours you may catch a faint sweet tropical scent rising from the lid. This step is important because it ensures the chicken cooks submerged enough to stay moist, which contributes to tender results. Avoid the error of stacking the chicken too tightly, which can cause uneven cook. Cover and let it cook low until the chicken is fully tender and cooked through, typically about 5 to 6 hours, allowing flavors to meld slowly.
Remove the cooked chicken from the slow cooker, transfer to a plate and cover.: When the chicken is done, it will give beneath your tongs and release clear juices, and the surface will appear opaque and tender. Transferring it to a plate and covering helps it rest while you work on thickening the sauce; resting lets the juices redistribute, preserving moistness when you shred the meat later. A common problem is shredding immediately and losing more juices, so give it a short rest under foil. As it sits, the sauce in the slow cooker continues to concentrate, and you can begin to notice deeper mango and coconut notes emerging.
In a separate small bowl, whisk together the tapioca starch with 8 teaspoons of the sauce from the slow cooker until smooth. Whisk it back into the slow cooker, along with the broccoli and peppers. Cover, turn the heat to high, and cook until the sauce thickens, about 1-1.5 hours.: The starch slurry should be glossy and lump free, with a translucent sheen that promises to thicken smoothly. Using warm sauce helps the starch dissolve cleanly; if you mix with cold liquid it can clump, so draw sauce from the cooker as directed. Whisk it back into the slow cooker, along with the broccoli and peppers, then cover and turn the heat to high so the sauce thickens, usually about 1 to 1.5 hours. Thickening on high shortens the time but still allows the starch to reach full gelatinization, creating a clingy texture that coats the chicken and veggies. Avoid dumping in too much starch, which can yield a gluey mouthfeel; aim for just enough to achieve a glossy, saucy texture.
While the sauce cooks, place the cauliflower into a large food processor and process until broken down and rice-like.: Pulse the florets until they resemble coarse rice, not puree; you want tiny distinct grains for the best texture. You'll hear a steady chopping sound and see pale, fluffy granules that will become a light bed for the curry. This technique matters because processed cauliflower mimics rice absorbency without heaviness, and processing too long yields a mushy result. A frequent misstep is overprocessing, which causes a wet paste that will not toast evenly, so stop as soon as the grains form.
Heat the coconut oil up in a large pan over medium-high heat and add the cauliflower and coconut flakes. Cook until lightly golden brown, about 2-3 minutes. Cover, reduce the heat to medium, and cook until the cauliflower is tender, about 2-4 minutes. Set aside.: The pan should hiss softly as the coconut oil hits the surface, and within moments the coconut flakes will begin to toast and release a nutty aroma. Stir the mixture until you see pale golden flecks on the flakes and the cauliflower warms through, about 2 to 3 minutes, then cover, reduce to medium, and cook until the cauliflower is tender, about 2 to 4 minutes. The toasted flakes add crunch and a toasty coconut flavor that plays beautifully against the sweet sauce. Avoid crowding the pan which can steam rather than toast; if your pan is small, cook in batches for the best texture.
Once the sauce is thickened, shred the chicken and stir it back into the slow cooker.: As you shred, the meat should pull apart easily and be moist; mixing it back into the glossy sauce lets the strands soak up concentrated flavors. The sound of soft shredding and the sight of the chicken fibers mingling with vibrant vegetables is satisfying, and the resulting texture feels cohesive and lush on the plate. If the meat seems dry, it may have been overcooked, so keep an eye on cooking time next time. Stir thoroughly to distribute sauce so every bite is saucy and flavored.
Divide the cauliflower rice between 4 bowls, followed by the chicken and the cubed mango.: As you assemble, the contrast of warm, savory chicken over the light cauliflower rice with cold, sweet mango cubes creates an exciting temperature and texture interplay. The bowls should look colorful, with golden sauce pooling around the rice and bright mango providing fresh pops; this contrast elevates the eating experience. A common oversight is adding mango too early; keep it chilled and add just before serving to preserve its firm, juicy texture.
Garnish with cilantro and green onion.: Finishing with chopped cilantro and sliced green onion adds herbal brightness and sharpness that cuts through the richness, while their green color makes the dish visually inviting. The aroma of fresh herbs immediately lifts the plate, and the delicate crunch from green onion completes the texture spectrum. Be careful not to over chop the herbs which can bruise and lose vibrancy; a light scattering is all you need for maximum impact.