Prepare rice according to package directions. Meanwhile, in large skillet, heat oil over medium-high heat.
When hot, add peppers and carrots; sauté 3 minutes. Add mushrooms and continue sautéing until softened.
Add shrimp and green onions; continue sautéing until shrimp is opaque and cooked through (about 6-8 minutes). Stir in sauce; bring to a boil.
Remove from heat and serve over rice; garnish with peanuts, if desired.