Sorry to disappoint you, but doesn't sound great... Butter or nut, are two flavors that are not compatible with an IPA.
If you're noob, maybe will help you to check the BJCP or BA sites for style guides (really helpful and enlightening).
Hogwash! Style guidelines are for competitions and commercial breweries! They have no place for a homebrewer
Beer is being redefined in America.
It's a fine idea-- try a british style ipa grain bill. Use some roasted barley--- try carafa-- 1 or 2-- for the nut flavor and use irish ale yeast fermented around 68-72F for the butter touch (diacetyl ain't always an off flavor)...
It's not off base at all--- sammy smith India Ale--- could be described as a butternut ipa for sure....
EDIT: Okay I am bored... Here you go. You better make it!
Honeynut ipa
A ProMash Recipe Report
BJCP Style and Style Guidelines
-------------------------------
14-A India Pale Ale, English IPA
Min OG: 1.050 Max OG: 1.075
Min IBU: 40 Max IBU: 60
Min Clr: 8 Max Clr: 14 Color in SRM, Lovibond
Recipe Specifics
----------------
Batch Size (Gal): 5.50 Wort Size (Gal): 5.50
Total Grain (Lbs): 10.63
Anticipated OG: 1.053 Plato: 13.21
Anticipated SRM: 15.5
Anticipated IBU: 40.6
Brewhouse Efficiency: 75 %
Wort Boil Time: 60 Minutes
Grain/Extract/Sugar
% Amount Name Origin Potential SRM
-----------------------------------------------------------------------------
75.3 8.00 lbs. Pale Malt(2-row) Great Britain 1.038 3
9.4 1.00 lbs. Cara-Pils Dextrine Malt 1.033 2
9.4 1.00 lbs. Carastan Malt Great Britian 1.035 34
4.7 0.50 lbs. Crystal 120L 1.033 120
1.2 0.13 lbs. Carafa Germany 1.030 375
Potential represented as SG per pound per gallon.
Hops
Amount Name Form Alpha IBU Boil Time
-----------------------------------------------------------------------------
1.25 oz. Goldings - E.K. Whole 4.75 23.8 60 min.
1.25 oz. Goldings - E.K. Whole 4.75 12.1 30 min.
1.25 oz. Goldings - E.K. Whole 4.75 4.8 10 min.
1.25 oz. Goldings - E.K. Whole 4.75 0.0 0 min.
Yeast
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WYeast 1084 Irish Ale