This is an easy one. Lots of flavor, very little effort. 

I love sriracha. If you do as well, this is a sauce you'll want to make. 

It starts with a classic roux as the thickening agent. From there, it's just a few ingredients. 

Ingredients
2 tbl olive oil 
1 1/2 tbls flour

2 cloves garlic, sliced into several times, but still whole
1 cup soy milk (original style)
2 tbls sriracha
1 tsp paprika
1 tsp turmeric
2 tbls salt

In a small sauce pan heat the oil over medium high heat and then whisk in the flour until incorporated and a golden paste is formed. 

Add in the soy milk and and remaining ingredients. Continue whisking over medium heat until the sauce coats the back of a spoon. 

Almond milk would work as well. I find oat milk too sweet for this application. I have not tried it with other plant milks.

Depending on the temperature of your milk this can take anywhere from 5-10 minutes. 

Remove from heat. It will thicken more upon resting.