Step 1

Heat peanut oil over medium heat in a large wok until it sizzles. Add onion and bell peppers. Stir-fry until tender, 5 to 7 minutes Transfer to a bowl.

Step 2

Pour coconut milk into the wok. Reduce heat to low and simmer 3 to 5 minutes. Add lime juice, fish sauce, curry paste, sugar, soy sauce, peanut sauce, Worcestershire, turmeric, garlic salt, curry powder, garam masala, and chile-garlic sauce. Stir to combine and adjust to taste.

Step 3

Increase heat to medium; stir steak and bell pepper-onion mixture into the wok and cook until mixture has thickened and reduced and steak is firm and hot in the center, about 10 minutes. Remove from heat and top with peanuts.