Place oven rack in center of oven. Preheat oven to 425.° Heat oil in large nonstick skillet over high heat and cook thawed peppers and onions and Knorr® Ready to Heat Cheddar Broccoli Rice 1 minute. Meanwhile, whisk together eggs and milk; season with salt and pepper, if desired.
Add egg mixture to skillet to evenly coat vegetable and rice mixture. Immediately place in oven and bake 9 minutes, or until eggs are set.