I just made a similar recipe, and used 1 Lbs flaked oats that I toasted in oven for about 20 mins first.
Attached. I started with a Bell's Best Brown clone and added oats. Still fermenting but tasting awesome.
On Deck: Vienna Lager, Munich Dunkel
Primary: Czech Pils
On tap: Lefse Blonde, Tripel
Bottled: Wee Heavy, RIS - Bourbon/Oak aged, RIS - Port Wine/Oak aged