To make the pandan extract, cut 5 pandan leaves into smaller pieces. Add them to a blender with ⅓ cup water and blend on high. Strain through a fine-mesh sieve to extract the pandan juice; set aside.
7 pandan leaves
In a medium pot, combine the glutinous rice, water, pandan extract, and 2 whole pandan leaves. Bring to a gentle boil over medium heat, then reduce to low and simmer, stirring occasionally, for 20–30 minutes, until the rice is soft and the mixture reaches your desired pudding-like consistency.
1 cup glutinous rice
Stir in the black-eyed peas, sugar, and salt. Continue to simmer over low heat, stirring frequently, until everything is well combined and the texture is to your liking.
1 cup black eyed peas, 2 Tbsp sugar, ½ tsp salt
To make the coconut sauce, in a separate small pot over low to medium heat, make the coconut sauce by combining the coconut milk, sugar, and salt. Stir in the tapioca starch mixture and cook, stirring constantly, until the sauce thickens to your desired consistency.
1 can coconut milk, 1 Tbsp sugar, ¼ tsp salt, 1 Tbsp tapioca starch
Serve the sticky rice pudding in small bowls and top with the coconut sauce.