Step 1: Prepare the Baby Bell Peppers - Preheat your oven to 375°F (190°C) if baking. Cut each pepper lengthwise, remove seeds, rinse, and set aside to dry.
Step 2: Mix the Filling - In a mixing bowl, combine cream cheese, green onions, garlic, salt, and walnuts. Add sriracha for heat if desired. Mix until creamy and adjust seasoning with black pepper.
Step 3: Stuff the Peppers - Fill each pepper half with the cream cheese mixture, being generous with the filling.
Step 4: Bake or Serve Cold - Bake on a baking sheet drizzled with oil for 15-20 minutes until tender and golden, or refrigerate for 30 minutes to serve cold.
Step 5: Garnish and Enjoy! - Let cool slightly, garnish with chopped green onions or paprika, and serve as a delightful snack or appetizer.