Approximate quantities: 2 lbs of wax beans, trimmed; 2 tablespoons of olive oil; 2 tablespoons of grapeseed oil; 6 cloves of garlic, peeled and smashed and roughly chopped; 1/2 teaspoon of crushed red chili flakes; salt and pepper
Wash and trim the beans, place in a large, rectangular Pyrex baking dish or on a sheet pan, drizzle with oils, crushed garlic cloves, red pepper flakes, salt and pepper an hour or so before grilling
Grill in a grill basket on medium heat for about 10-12 minutes, turning or shaking the grill basket halfway through
The variable here is your grill and it’s temperatures. I’ve provided a heat and time range for everything that should work for almost all grills.
Almost everything needs to be turned, or if it’s in a grill basket a good shake at the halfway point will work, so what I’d recommend is plan to check it and turn it halfway through the shorter time range that I suggest, and then, to check it again for doneness, at the end of the shorter time range. This way, if you grill doesn’t run as hot, and you can see that you need more time, it’s easy to leave the second side on for a few more minutes.