Heat the oil in a medium-hot pan or wok. Add the shrimp and fry briefly for 2 to 3 minutes until they are two-thirds pink. Add the chili powder, peanut butter, the chopped garlic clove, soy sauce and the spring onions, mix and continue to fry until the shrimp are pink.
My personal tip:
If you like it spicier, you can spice up the dish with coarse and hot chilli flakes. If you prefer it milder, just use paprika powder instead of chili powder.