Fermentables:
Lager Malt - 79.1%
Wheat Malt - 7.9%
Oat Malt - 7.8%
CaraHell (Weyermann) - 5.3%
Hops:
Centennial Whole 11.5 % @ 60 mins - 25g - (FWH)
Centennial Whole 11.5 % @ 10 mins - 20g
Centennial Whole 11.5 % @ 0 mins - 30g - (20 minute Copper Stand)
Final Volume: 23 Litres
Original Gravity: 1.036
Final Gravity: 1.009
Alcohol Content: 3.5% ABV
Total Liquor: 32.1 Litres
Mash Liquor: 9.1 Litres
Mash Efficiency: 75 %
Bitterness: 36 EBU - I've set the hop utilisation in BeerEngine to 25% for this to see if things turn out a bit more realistic.
Colour: 5 EBC
Blended malts:

The garage brewery Corner, I thought I'd add a bit of an overview of my setup:

A few Centennial Hops:

The Mash:

Another view of the Brewery Corner:

First sparge running into the copper onto the First Wort Hops:

Flameout hops going in:

The Money shot, hydrometer says a bit above what the Refractometer said:

AG#66 - Centennial Blonde by pdtnc, on Flickr
All done and cleaned up in about 5 hours, Mashed in at 8.30am for 60mins, boiled for 60mins, Hop steep for 20mins, cooled, stood for 20mins then ran to fermenter and pitched Safale us-05 at 20c