We've had a microwave for 25 years. In all that time I've only ever used it for making porridge and softening little pats of too-hard butter to spread on my butty.

For a bacon butty you need unsmoked streaky, a grill, butter and prepacked sliced pap. I have known people to indulge in the abhorrent practice of putting ketchup in a bacon butty. My advice to such people is to stop being silly and use twice as much butter in future. The ideal bacon is just short of going totally crispy but with the fat nicely rendered. If your cooking method can manage that it doesn't matter how you did it.