Can I make these hot dogs ahead of time?
Yes. Prepare the sautéed vegetable mixture up to 1 day ahead and store in an airtight container in the fridge. Reheat in the skillet before assembling with hot dogs and cheese.
What cheese works best if I don't have Mexican blend?
Cheddar, Monterey Jack, or a mix of cheddar and pepper jack are excellent substitutes and will melt just as well.
How do I keep the buns from getting soggy?
Toast the buns lightly and assemble the hot dogs just before serving. Avoid letting them sit with toppings for more than a few minutes.
Can I use fresh peppers instead of jalapeños?
Yes. Bell peppers work well and give a milder flavor, or use serrano peppers for extra heat.
How do I know when the cheese is fully melted?
Cook until the cheese is completely liquid and bubbly on top of the hot dogs, about 2-3 minutes over medium heat.