Add the butternut squash cubes to a baking sheet and drizzle with 1 tablespoon vegetable oil.
Bake for 30 minutes or until tender and golden brown.
Meanwhile, in a bowl, mix together the soy sauce, honey, Sichuan pepper, sesame oil, Shaoxing cooking wine, cornstarch, and 2 tablespoons water. Set aside.
Place a large pan over medium heat and add the remaining 1 tablespoon vegetable oil.
Add the broccolini and peppers and cook for 2 minutes, tossing occasionally.
Add the garlic, ginger, chili, and roasted butternut squash to the pan and stir-fry for 1 minute, or until the garlic is fragrant.
Pour in the sauce, let simmer for 30 seconds, and turn off the heat.
Plate the stir-fry over rice, if using.
Garnish with cilantro and chopped peanuts before serving.