In a mixing bowl, whisk together the brown sugar, soy sauce, grated ginger, sesame oil, and Sriracha. Set aside.

Heat olive oil in a large skillet over medium-high heat. Sauté minced garlic until fragrant.

Add ground beef to the skillet, breaking it into small pieces. Cook until browned, about 3-5 minutes.

Pour the prepared sauce over the browned beef and stir well. Add spiralized zucchini and chopped green onions, mixing together.

Let the mixture simmer for about 2 minutes, stirring occasionally, until zucchini is heated through.

Remove from heat, serve immediately, and garnish with sesame seeds and additional green onions if desired.