I have been on both sides if this, although as a boss I have always tried to give others the glory and take the heat. Also I probably do swoop in with ideas, but I don't leave people high and dry to figure them out.
The solution is really to speak up for yourself. You may have to remind your boss that he put you in charge. I can be a tough boss but I will listen to any argument and will be glad to be proven wrong or told that my idea is going on the list for later. But - you must convince me that your idea is better, or more practical, or that you at least have thought things through.
I know it can be tough because bosses tend to be older and, maybe in some cases wiser (but not always). As the boss your pressure is to keep a team moving forward and so you grow used to delegating. I had to be reminded that I gave somebody a project once and I felt really bad about not letting him do it on his own. I really just didn't want to see him fail, but I was micromanaging. It was difficult for him to bring it up to me but I was glad he did and we got past it.
I'd say - face it head on. If the boss still won't listen, then start figuring out another employment opportunity.