The term 'Muffin Ingredient' can be broken down into six crossword solutions: BRAN (4 letters), OAT (3 letters), oatbran (7 letters), CORNMEAL (8 letters), CORN (4 letters), and oleo (4 letters). BRAN is a type of cereal grain made from the hard outer layer of wheat or other grains. OAT is a cereal grain that is widely cultivated for its edible seeds. Oatbran is a type of BRAN made from oats. CORNMEAL is a type of flour made from dried CORN kernels. CORN is a cereal grain that is widely cultivated for its edible seeds. Oleo is a type of margarine made from vegetable oils. All of these ingredients are commonly used in muffin recipes.