Let's prepare crispy garlic chips and oil first, place the olive oil and the finely sliced garlic in a small saucepan over medium heat
Cook until the garlic is just starting to turn golden at the edges
Place it into another bowl (heat-proof) and set aside for later (the crispy garlic will continue cooking and turn evenly golden in the bowl)
Then, we start with the pasta. Heat a large pot of salted water over high heat. When boiling rapidly, add the pasta and cook until al dente
While the pasta is cooking, let's make the sauce. Add the butter, chopped garlic, and chilli flakes into a large frying pan over medium-high heat. Stir well, then add oyster sauce
Simmer for a minute and then take off the heat until the pasta is cooked
When the pasta is al dente, reserve a cup of pasta cooking liquid in case you need it later
Place the sauce back on the heat and add the pasta straight into the pan
Cook until the liquid has been absorbed by the pasta and everything is looking super glossy and thick
Add mushroom stock and garlic powder then add a little pasta cooking water here if necessary (optional to add sambal/chilli sauce for extra heat)
For garnish, top with a drizzle of garlic oil and crispy garlic chips.
Add additional spring onion and chilli flakes too