Prepare the Ingredients: Wash the green beans thoroughly, trim the ends, and mince the garlic cloves finely.
Mix the Sauce: Whisk together the white miso, soy sauce, maple syrup, and sesame oil until smooth.
Heat the Oil: In a large skillet over medium-high heat, add the avocado oil and heat until shimmering.
Cook the Green Beans: Add the trimmed green beans and toss with the garlic, stir-frying for 3-4 minutes.
Combine with Sauce: Pour the prepared miso sauce over the cooked green beans and toss to coat.
Serve and Garnish: Transfer to a serving platter and sprinkle with toasted sesame seeds before serving.