01 -
Combine Thai chilis and garlic and mince together to a coarse paste using a knife, mortar and pestle, or small food processor.
02 -
In a small bowl, stir together oyster sauce, soy sauce, dark soy sauce, fish sauce (if using), and sugar until the sugar dissolves.
03 -
Add vegetable oil to a large skillet over medium-high heat. Stir-fry the garlic-chili paste until fragrant and just beginning to brown.
04 -
Add ground chicken to the pan, spreading it out and moving the aromatics over the meat to avoid burning. Sear without stirring for 1 minute for color, then break apart and continue cooking until almost cooked through, about 2 more minutes.
05 -
Pour the prepared sauce over the chicken, mixing thoroughly. Add diced onion and green beans. Cook for 1–2 minutes until vegetables are crisp-tender and sauce reduces slightly.
06 -
Turn off the heat and add basil leaves, tossing until they are wilted and fully incorporated.
07 -
Serve hot with steamed rice, topped with a crispy fried egg and a generous squeeze of lime juice if desired.