Gluten Free Cake Mix Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

King Arthur is the best-performing gluten free cake mix brand in July 2026, moving 32,000 units across 5 ASINs for 47.1% of Top 10 volume. Simple Mills follows with 19,000 units (27.9%), ahead of Betty Crocker on 10,000 units (14.7%).

With 4 brands splitting the Top 10 and 89.7% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $1.77 to $7.45, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B08M3L44SS booked 4K units at $7.79, with ▲ 33.3% MoM change. On the growth side, B0DGYVDPG6 leads positive momentum with ▲ 100.0% MoM growth on 200 units, with B07Q5BZ54R close behind at ▲ 75.0% MoM on 700 units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.