Cook the noodles: Prepare the lo mein noodles according to the package instructions until al dente. Drain them and set aside.

Stir-fry the veggies: In a large skillet or wok, heat a splash of vegetable oil over medium-high heat. Add the bell peppers, carrots, and broccoli, and stir-fry for about 3 minutes until tender-crisp.

Add the shrimp: Push the sautéed veggies to one side of the pan and add the shrimp on the other side. Cook for about 3-5 minutes until they turn pink.

Combine and toss: Add the cooked lo mein noodles back into the pan. Sprinkle in the minced garlic, soy sauce, and sesame oil. Toss everything together.

Serve hot: Taste your dish and adjust seasoning if needed. Serve hot, optionally garnished with green onions or sesame seeds.