In your crockpot, combine the finely diced yellow onion, minced garlic, grated ginger, and chopped lemongrass.
Next, incorporate the Thai red curry paste and fish sauce into the crockpot. Stir everything together until well combined.
Open the cans of full-fat coconut milk and pour them into the mixture.
Add the honey to the crockpot, stirring it in to ensure it blends well with the other ingredients.
Toss in the diced boneless chicken breasts or thighs. Stir to coat the chicken in the flavorful sauce.
Cover the crockpot and set it to cook on low for 6 to 8 hours, or on high for 3 to 4 hours.
About 30 minutes before serving, stir in the roughly chopped broccoli rabe.
Once the cooking time is up, stir in the fresh basil and/or cilantro. Serve the curry over steamed rice, and garnish with pomegranate arils and chopped peanuts.