Warning! This is not one of my simple tips. Making roasted peppers takes time. It’s fiddly. It’s also worth it. I’ve tried bottled roasted red pepper, and while I don’t know exactly how they make them, I taste a chemical undertone every time. The version you can buy at an olive bar in an upscale supermarket is often great, but very, very costly.
Once in a while, when I find a really good price on red pepper, I will buy a few and commit the time to roasting and freezing a supply.