Congrats on your two years of escaping the regular working world!
In general, I don't hide my periods of non-work adventures. I have a skills based resume, and former employer section is a short relevant listing at the end. I only list the calendar years of service at those employers, and leave it to the reader to round down or up as they see fit.
First, your former coworkers will be your best source of opportunity. Unfortunately, it sounds as if you have moved far from your previous employer. This may make things a bit more difficult.
You don't mention the type of engineering nor do you mention the target company size.
If you are in a computer or "tech" related area of engineering, the market can be tight and you will find plenty of recruiters looking for engineers re-entering the workforce. You won't be working on the hottest technologies, but you also won't be on the projects with the craziest schedules.
Large company with excellent benefits have the luxury of "requiring" candidates with a "solid" work history (reliable wage slaves). You will want to target medium and small employers who have a more difficult time acquiring talent, and are open to hiring less than "perfect" candidates.
I don't consider myself pliable enough to be a "perfect candidate" for corporate America, and I have worked with some other amazing "guys" who have quirks that would keep the out of corporate America, but who have the most amazing design skills and insight. Watch out for "quirks" that include teams dominated by one person with a huge ego or environments that have the reputation of being toxic.
The current unemployment rate in your area will impact your success. Colorado is currently below 1% unemployment in technical fields, and smaller employers are forced to look at those re-entering the workforce.
Finally, have a compelling story about your recent two year gap. The story doesn't have to be career centric, but rather focus on the adventure and heart of it. "I always wanted to work with my Dad" pulls at the heart strings and says you have a strong family connection. Own your story, and be proud you chose to adventure off the given career path.
Many of technical interviews have been derailed when the wage slaves figure out I have left the plantation for 2-3 years at a time. Fellow engineers will want to know your Escape Plan...