This is from fellow blogger “Pinch of Yum” and is just a wonderful sauce to have around.

The flavors of this sauce are pretty addictive and you will want plenty on hand to pour over everything!

Serves 4
1 can light coconut milk
2 tbsp peanut butter
2 tbsp curry paste
1 1/2 tbsp Thai fish sauce
2 tbsp fresh lime juice
3 tbsp brown sugar
1 tsp minced garlic
1/3 cup crushed peanuts
up to 1/2 cup water of broth
extra crushed peanuts and scallions for topping

Pour the coconut milk into a small saucepan over high heat. When the coconut milk reaches a gentle simmer, add the peanut butter, curry paste, fish sauce, lime juice, brown sugar and garlic.
Whisk and keep on high heat for 15 minutes or until the sauce has reduced and thickened.

Add the peanuts and simmer for another 5 to 10 minutes.
When the sauce coats the back of a spoon, add small amounts of broth or water and whisk to adjust the consistency depending on how you will use it and how thick you want it.

If the sauce separates, just whisk vigorously to smooth out again.
Serve this sauce over rice noodles, chicken, fish, vegetables or any other way that sounds good to you!
Top with crushed peanuts and scallions

Notes
More time simmering = thicker, creamier and more flavorful sauce.
If you want a thinner sauce, simmer it for less time and plan to add a bit of additional liquid.
I’ve noticed that when I add the crushed peanuts, the consistency really thickens quite a bit, so you could omit the peanut butter and / or peanuts to also adjust to your desired consistency