Soak the brown rice noodles in a bowl of very hot water for 8-10 minutes until tender but still firm to the bite, then drain and set aside.
In a small mixing bowl, whisk together the tamari, fish sauce, maple syrup, and lime juice to create the Pad Thai sauce.
Heat the avocado oil in a large wok or non-stick skillet over medium-high heat.
Add the shrimp and cubed tofu to the pan, searing for 2-3 minutes until the shrimp are pink and the tofu is lightly golden on the edges.
Push the shrimp and tofu to one side of the pan, crack the egg into the empty space, and scramble quickly until just set.
Stir in the minced garlic and the soaked noodles, then pour the prepared sauce over everything.
Toss the mixture constantly for 1-2 minutes to ensure the noodles are evenly coated and have absorbed the sauce.
Fold in the bean sprouts and sliced green onions, cooking for 1 more minute until the sprouts are slightly wilted but still crunchy.
Remove from heat and serve immediately, topped with crushed roasted peanuts and red pepper flakes.