3 pound boneless, skinless chicken breasts, rinsed, patted dry, and cut into 1-inch cubes
½ medium-sized yellow onion, finely chopped (about ½ cup)
1 (6-ounce) can tomato paste
1 (28-ounce) can crushed tomatoes
1 (13½-ounce) can full-fat coconut milk
cream scooped from the top of 1 chilled (13½-ounce) can full-fat coconut milk (about ½ cup)
¼ cup fresh lime juice (about 2 limes)
fresh jalapeño slices, for garnish
¼ cup coarsely chopped fresh cilantro, for garnish
Directions
In a small bowl, mix together the ingredients for the spice blend. Set aside.
Melt 2 tablespoons of the butter in a large frying pan over high heat. While the butter is melting, thoroughly coat the chicken on all sides with half of the spice blend. Working in batches so that no two pieces of chicken touch each other in the pan, add a portion of the seasoned chicken to the hot pan and sear for 2 to 3 minutes on each side, just until the chicken develops a light brown crust. Transfer the browned chicken to the slow cooker and repeat the process with the remaining chicken.
Once the chicken is finished, add the remaining tablespoon of butter to the hot pan. Once melted, add the rest of the spice blend and the chopped onion. Stir for 8 to 10 minutes, until browned but not burned. Add the tomato paste, whisk to incorporate, and cook for an additional 4 to 5 minutes, until the tomato paste develops a deep red color. Add the crushed tomatoes, coconut milk, coconut cream, and lime juice. Stir to incorporate and bring to a simmer. Let simmer for 10 minutes, or until it has thickened slightly and coats the back of a spoon. Pour the sauce over the chicken in the slow cooker. Stir so that the chicken is coated on all sides.
Cook in the slow cooker on high for 4 hours or on low for 8 hours.
Serve garnished with the jalapeño slices and fresh cilantro.