Prep Veggies and Shrimp: Start by slicing the bell peppers, mincing the garlic, and chopping the ginger. Ensure your shrimp are cleaned and dried with paper towels.
Make the Sauce: In a bowl, whisk together rice vinegar, ketchup, honey, soy sauce, and cornstarch mixture until smooth. Set aside.
Cook the Shrimp: Heat oil in a skillet over medium-high heat. Place the shrimp in the pan and cook until they turn pink, which should take about 2 to 3 minutes. Remove shrimp and set aside.
Sauté Veggies: In the same skillet, add a bit more oil if needed, then throw in the bell peppers, garlic, and ginger. Sauté for about 2 minutes until the veggies are just tender.
Combine and Simmer: Return the shrimp to the skillet, pour the sauce over, and stir well to combine. Allow the mixture to simmer for 3-4 minutes, or until the sauce thickens and coats the shrimp nicely.
Garnish and Serve: Sprinkle chopped green onions on top for a fresh, colorful finish.