Take away darkish inexperienced elements from 2 scallions and thinly slice; put aside for serving. Thinly slice white and pale inexperienced elements. Set reserved pan over medium warmth. Add white and pale inexperienced elements of scallions and 2 garlic cloves, finely chopped, and cook dinner, stirring typically, till translucent, about 2 minutes. Sprinkle 2 tsp. garam masala over scallions and garlic, then season with salt. Prepare dinner, stirring, till aromatic, about 30 seconds. Add 1 inexperienced bell pepper, ribs and seeds eliminated, reduce into 1″ items, and cook dinner, stirring typically, till crisp-tender, about 2 minutes. Add reserved sauce and cook dinner, stirring often, till effervescent and barely thickened, about 3 minutes. Add tofu and cook dinner, stirring, till coated in sauce, about 45 seconds. Instantly take away from warmth.