The only cellars in The Hobbit are Bilbo’s at Bag-End and those of the Elvenking, and they are properly filled with food!

• 01.002 cellars, pantries (lots of these),
• 01.036 to the cellar to fill a pint beer-mug,
• 01.084 in the cellar,
• 01.123 and lanes, and tunnels, alleys, cellars, mansions and passages.
• 09.018 These opened upwards into the king’s cellars.
• 09.023 clearing the cellars of the empty wood,
• 09.030 and fortunately not far from the cellars.
• 09.035 down into the lowest cellars they crept.
• 09.039 and talking into the cellars
• 10.007 in the king’s cellars.

Update: 2016.10.04 – “cellar” is listed both as common and uncommon in my lemmatized source, although “cellars is always  uncommon (less frequent than the most common ten thousand).