Get the ingredients ready. Clean bell peppers, onion and sliced, if you’re using frozen vegetables and or shrimp, thaw and pat dry. Some of the ingredients were not captured.
Heat 2-3 tablespoons oil in a wok/pan over medium-high heat, add onion, garlic, sprinkle a pinch of salt to draw out liquid from onion.
Add sauce mixture and simmer for about 2 minutes. Use a spatula to create space in the wok/pan and add shrimp and slightly cook.
Add slurry (cornstarch and water) and let everything heat through. You don’t want to overcook the shrimp.