Prepare the Noodles: Cook the rice noodles as instructed on the package. Drain, then mix with vegetable oil to prevent sticking. Set aside.
Cook the Tempeh: Heat a generous amount of sesame oil in a non-stick pan or wok over medium heat. Add the tempeh pieces and sear for about 2-3 minutes per side until golden. Remove from the pan and set aside.
Sauté the Vegetables: Add 2 more tablespoons of sesame oil to the same pan. Toss in the scallions, garlic, carrots, and bean sprouts. Stir-fry for about 5-10 minutes until the veggies soften while maintaining a slight crunch.
Make the Sauce: In a small bowl, whisk together the soy sauce, coconut sugar, rice vinegar, peanut butter, and red chili. If needed, add a splash of water for a thinner consistency.
Combine Everything: Return the tempeh to the pan, then add the cooked noodles and prepared sauce. Stir-fry everything together over medium heat until evenly heated and well coated in sauce.
Garnish & Serve: Transfer to plates, then top with crushed peanuts, fresh cilantro, and a squeeze of lime juice. Enjoy!