01
All-Purpose Flour
10.0best for brownies1 cup : 7/8 cup
Lighter and grittier; use 3/4 cup AP flour per cup rice flour, loses gluten-free benefit
10.0
rice flour substitute
in brownies.
Rice Flour provides just enough structure to hold Brownies together without making them cakey. The substitute should keep the fudgy interior ratio intact.
top substitutes
adjustment for this dish
All-Purpose Flour contains gluten that develops when whisked with wet ingredients, so limit folding to 10 strokes or the brownies turn cakey instead of fudgy. Use 0.875 cup APF per cup rice flour; the glossy crackle top forms identically, but pull 2 minutes earlier since gluten holds structure and over-baking dries the square fast.
02
Cornstarch
10.0best for brownies1/2 cup : 1 cup
Best as thickener sub only
10.0
adjustment for this dish
Cornstarch has pure starch and no protein, so it intensifies the fudgy center dramatically but provides no chew. Use 0.5 cup per cup rice flour and combine with 1/4 cup cocoa for structure. Expect a glossier crackle and softer edges; pull at 205°F center but extend bake time 3 minutes for full set.
03
Sorghum Flour
10.0best for brownies1 cup : 1 cup
Neutral GF flour swap
10.0
adjustment for this dish
Sorghum Flour adds a slightly nutty, wheat-like taste that pairs well with cocoa melt. Swap 1:1 and whisk slightly longer (2:30 vs 2:00) to dissolve sugar fully. The crackle top forms well, but the center sets firmer; pull at the 30-minute mark when edges just begin to pull from the pan.
show 6 more substitutes
04
Oat Flour
10.01 cup : 1 cup
Not GF; adds slight oat flavor
10.0
adjustment for this dish
Oat Flour brings beta-glucans that lock in moisture, making brownies taste fudgier even when slightly overbaked. Swap 1:1 by volume but cut sugar by 1 tablespoon per cup since oat flour tastes sweeter. The crackle top is matte rather than glossy, so whisk an extra egg yolk for shine.
05
Millet Flour
10.01 cup : 1 cup
Mild and light, gluten-free; good for flatbreads
10.0
adjustment for this dish
Millet Flour is drier and sweeter than rice flour, producing a chewier texture that borders on dense. Swap 1:1, add 1 tablespoon melted butter to the batter for moisture, and fold gently. The square stays fudgy at the center but the edges turn firmer; pull 1 minute earlier for tender edges.
06
Potato Flour
6.73/4 cup : 1 cup
Heavier; use less to avoid density
6.7
07
Coconut Flour
6.71/4 cup : 1 cup
Very absorbent, use 1/4 cup and add extra egg
6.7
08
Cassava Flour
6.71 cup : 1 cup
Grain-free, similar texture; slightly stickier dough
6.7
09
Cake Flour
6.71 cup : 1 cup
Fine soft flour for delicate bakes; lower protein yields tender crumb, reduce liquid slightly
6.7
technique for brownies
technique
Rice flour brownies win on the crackle top because rice starch gelatinizes at 158°F — about 15°F lower than wheat — so the sugar crust sets while the interior stays fudgy if you get the pan right. Use a metal 8x8 pan (not glass, which delays heat transfer by 3-4 minutes) and pull the brownies at 32 minutes when the center reads 205°F on a probe.
Whisk melted butter with sugar for a full 2 minutes so the cocoa dissolves and the ribbon holds for 6 seconds — this traffic-jam of dissolved sugar migrates to the top during baking and forms the glossy crackle. Unlike rice flour in cake where you want even rise across the pan, rice flour in brownies should stay dense at the center: pull when edges are set but the middle still jiggles.
Do not sift rice flour into the pan; fold it in by hand in 10 strokes to keep the tender, chewy texture without developing chalk.
pitfalls to avoid
watch out
Don't use a glass pan — glass delays heat transfer 3-4 minutes, over-setting the edges before the center reaches the 205°F fudgy sweet spot and killing the crackle top.
watch out
Avoid whipping eggs into the batter with a mixer — hand-whisking for 90 seconds dissolves sugar enough for the glossy ribbon without aerating the cocoa into a cakey crumb.
watch out
Don't pull brownies when the center is set — rice flour carries heat after you pull, so the square firms on the rack; waiting for a clean toothpick gives dry, not fudgy, results.
watch out
Measure cocoa by weight (40g per half-cup); volume scoops vary 20% and too much cocoa turns the interior chalky instead of tender.
watch out
Skip greasing the pan with butter — rice flour brownies stick to butter more than wheat; use parchment slings so you can pull the block cleanly after a 15-minute cool.