The crossword solutions for the term MUFFIN MORSEL are OAT and WALNUT. OAT is a 3-letter word and WALNUT is a 6-letter word. Muffin morsels are small pieces of muffins that are often used as toppings or decorations. Oats are a type of cereal grain that is often used in baking, while walnuts are a type of nut that is also commonly used in baking. Both oats and walnuts are popular ingredients in muffin recipes.