Jiffy Corn Muffin Mix is the $0.49 box that has been in American pantries since 1930. This homemade dry mix replicates it exactly — same tender, slightly cakey crumb, same quick one-bowl method, and the same recipe card instructions the box has used for decades. The mix takes ten minutes to make, stores for three months in a jar, and uses the same amount in any Jiffy-based recipe: corn casserole, skillet cornbread, sweet corn muffins.
The one detail most copycat recipes get wrong: the fat. The Jiffy box uses lard (vegetable shortening in this version) — not butter. Shortening is 100% fat with no water, so it coats the flour proteins more completely, suppresses gluten development, and produces a softer crumb than butter can. Butter makes good corn muffins; shortening makes Jiffy corn muffins.
The Shortening vs. Butter Question
The Jiffy box ingredient list reads “lard and/or partially hydrogenated lard.” Vegetable shortening — Crisco is the most widely available — is the home kitchen equivalent and produces muffins that match the box in texture. If you substitute butter, the muffins will taste richer but will be slightly more crumbly and less tender. For corn casserole, the difference is negligible either way.
Making the Dry Mix in Bulk
The single-batch recipe above makes the equivalent of one 8.5-oz Jiffy box (6 muffins). For a jar that lasts the season, make the 3x bulk version listed in the ingredients and store it in a quart mason jar. Each time you need one batch, use one-third of the jar — about 240g by weight, or roughly 1 1/2 cups scooped. Dividing the jar into thirds (or weighing) is more accurate than a cup measure, because the cut-in shortening makes the loose volume shift as the mix settles.
The Corn Casserole
The same dry mix is the base for Jiffy corn casserole (also called Jiffy corn pudding or sweet corn casserole), the Thanksgiving side dish on more American holiday tables than almost any other. The full recipe is at the Jiffy Corn Casserole page. The dry mix replaces the box 1:1.
For more Thanksgiving cornbread baking, see Cracker Barrel Cornbread Dressing and Cracker Barrel Corn Muffins.
