In a medium mixing bowl, combine softened cream cheese and mayonnaise. Use an electric mixer to beat until smooth and free of lumps for about 2-3 minutes.

Sprinkle in garlic powder, onion powder, and salt. Blend these seasonings into the cream cheese mixture using the mixer for about 1-2 minutes.

Gently fold in the chopped jalapeños and roasted red peppers using a spatula.

Sprinkle in the shredded white cheddar cheese and fold it into the creamy mixture.

Transfer the dip mixture to a serving bowl and cover it tightly with plastic wrap. Refrigerate for at least 30 minutes.

Once chilled, garnish with additional cheese, sliced jalapeños, or cilantro and serve with sturdy crackers or tortilla chips.