Thole Kitchen · Bake log

Banana Bread bake log

What was actually made, versus what the card says. Companion to the banana bread recipe.

Bake001
Date13 Sep 2026
Oven325 °F
Time93 min
Pull205 °F
Per pan935 g
Add-insnone

Bake 001 13 September 2026

Two loaves in 1.5 qt clear Pyrex, plain, no add-ins. Running it plain makes this a clean baseline — nothing for the malt, browned butter or banana to hide behind. Add chocolate or walnuts only after the plain version is dialed in.

As built

	Card	Actual
All-purpose flour	300 g	300 g
Toasted oat flour	80 g	80 g
Malted milk powder	50 g	50 g
Baking soda	1½ tsp	1½ tsp
Baking powder	1 tsp	1 tsp
Kosher salt	scant 1¾ tsp	confirm — 1½ or 1¾?
Dark brown sugar	300 g	200 g
Granulated sugar	—	100 g
Browned butter	~167 g	~167 g
Mascarpone	140 g	140 g
Eggs	4	4
Vanilla	2 tsp	2 tsp
Banana mash	530 g	600 g
Add-ins	optional	none
Total batter	~1,800 g	~1,870 g
Per pan	900 g	935 g

Method deltas

Bananas roasted in the peel at 350 °F rather than microwaved. Drained, liquid reduced, returned to the mash. Landed at 600 g rather than 530 g.
Creamed, not whisked. Browned butter and sugar wouldn't come together as a paste, so the bowl went into the freezer ~5 minutes to re-solidify the fat, then into the stand mixer and whipped light. This converts the loaf from a melted-butter quick bread to a creamed cake method.
Pans raised. Glass pans on a wire rack over a reflective sheet tray, cutting radiant heat to the bottoms.
Bake targets: 85–95 min, tent at minute 35, pull at 205 °F.
Cooling: out of the pans after ~10 min, parchment off, uncovered on a rack overnight.

Banana : flour ratio

Original BA recipe (the wet loaf)	1.83 : 1
Card target	1.39 : 1
Bake 001	1.58 : 1

Predictions made before the bake

#	Prediction	Outcome
1	Lighter, more open, cakier crumb — from the creaming	pending
2	Higher rise, domed and cracked top — same cause	pending
3	Moist, possibly slightly heavy center — from 600 g banana	pending
4	Longer bake — more batter, more banana, less bottom heat	✓ 93 min, top of the 85–95 estimate
5	Faster top browning — less acid for the soda	pending
6	Cleaner, less muddy flavor than all-dark-brown	pending
7	Risk: pale, under-set bottoms from the reflective tray	pending

Results

Confirmed: 93 minutes to 205 °F internal, at 325 °F, 935 g per pan, glass on a rack over a reflective tray. This is the calibration number for this configuration — drop the tray or go back to 530 g banana and it will come in meaningfully shorter.

Still to fill in:

Did the sheet tray come out mid-bake?
Top color and shape; bottom and side color
Crumb — light and cakey, or dense? Any gummy band near the bottom?
Moisture — right, wet, or dry?
Flavor balance — banana forward, or buried under malt and butter?
Sweetness — right, or flat without sour cream tang?
Grittiness from the oat flour; crust thickness from the long bake
Day two

Next-bake hypotheses

Leave blank until Bake 001 is judged. Change one thing at a time from here. Bake 001 is thirteen-odd deviations off the original, so however it turns out, it can't say which change earned the result. From Bake 002 on, one variable per bake.

Wet or heavy → banana back to 530 g, nothing else.
Dry or tight → keep 600 g banana, nothing else.
Flat or oversweet → full-fat sour cream instead of mascarpone.
Pale bottoms → drop the sheet tray, keep everything else.
Too cakey → back to the melted-butter whisk method.
Thick, dry crust → drop the sheet tray first, then reconsider the banana.

Recipe Banana bread — the card

Browned butter, malt & toasted oat. Double or single, 1.5 qt glass.