Brown Butter Almond Financiers

Allow about 8 minutes. Check that a single 24-hole metal mini-muffin tin with approximately 30ml cavities fits on the oven's middle shelf. Set out the rack and dry heatproof bowl. Weigh 150g butter and divide into 140g for browning and 10g for greasing; cube the larger portion and keep the smaller portion covered in the fridge for now. Separate and weigh 120g egg whites into a clean covered bowl, keeping yolks out, then refrigerate the whites until mixing. Refrigerate the unused yolks promptly for another use. Wash hands and clean the worktop after handling raw eggs.

Put the 140g cubed butter into the light-interior saucepan. Allow about 8 minutes over medium-low to medium heat, including melting and transfer. Stir and sweep the base with the heatproof spatula as it bubbles and foams; reduce the heat if colouring rapidly. Look underneath the foam for amber-brown specks and a toasted, nutty aroma, not black flecks or smoke. As soon as the milk solids are golden brown, pour into the dry heatproof bowl and scrape in the browned bits to stop them cooking in the hot pan. Switch off the hob. The cue matters more than the estimate; count any extra time. If it smells acrid or the solids are black, let it cool safely and start again with fresh ingredients rather than mixing burnt butter into the batter.

Let the brown butter cool for about 15 minutes in the broad bowl, until lukewarm rather than hot but still liquid. Do not add hot butter to egg whites. During the first 5 minutes of this same cooling period, weigh all 100g ground almonds, sift the 145g icing sugar, divide the plain flour into 45g batter flour and 5g dusting flour, and weigh the 1g salt. Whisk the almonds, icing sugar, 45g flour and salt together in the mixing bowl, breaking up almond lumps. Set the 5g flour aside. This dry preparation overlaps butter cooling; it is not an extra stage after it. Allow longer cooling if still hot. If the butter sets, warm gently only until liquid and let it return to lukewarm, adding that actual extra time. Do not top up the reduced brown butter with water or more butter.

Allow about 5 minutes. Loosen the cold measured egg whites briefly with a fork without making a foam, then whisk them into the dry mixture just until evenly combined with no dry pockets. Stir the brown butter so the milk solids are distributed and add all of it in two additions, whisking gently after each until the batter is smooth with no separate oily layer. Scrape the bowl and cover. There is no creaming, meringue or baking powder in this recipe. Do not taste the raw egg-and-flour batter.

Refrigerate the covered batter for 3 hours at 5°C or below. Keep it refrigerated during the following overlapping preparations. At 150 minutes into the rest, take the reserved 10g greasing butter from the fridge and let it soften for 10 minutes. At 160 minutes, start a 20-minute oven preheat to 190°C conventional / 170°C fan, with a shelf in the middle. During the first 6 minutes of this preheat, brush all 24 cavities thinly and thoroughly with the measured greasing butter, including the upper sides; a little may remain on the brush. Dust them with the reserved 5g flour, moving the tin to coat the butter, then invert over a bin and tap out loose excess. Do not add the excess flour to the batter. The rest lasts the full 3 hours, and preheating, softening and tin preparation fit inside it. If butter is still too firm for brushing or the oven is not ready at the end, keep the batter refrigerated until all are ready and add the actual extra wait.

Allow about 6 minutes to uncover, scrape and divide the entire cold batter evenly between the 24 prepared cavities using two teaspoons or a small scoop. Aim for similar portions, roughly 21–23g each; this is a planning estimate, not a measured batter yield. Spread each portion gently across the bottom without beating air into it, keeping each cavity no more than about three-quarters full. Do not put a double portion into a standard muffin hole or pile spare batter on top. If the mixture does not fit within that limit, check the tin's cavity size before continuing; do not overfill the holes. Allow about 1 minute to load the fully heated oven and close the door.

Bake for about 15 minutes at 190°C conventional / 170°C fan. Towards the end of this allowance, check for deep golden edges, paler golden tops and centres that spring back lightly. A clean skewer in one of the thickest centres should come out without wet batter. Do not rely on browned edges alone. If the centres remain wet, bake in further 2-minute intervals until set, counting each extra interval. Stop earlier if the cakes have already reached these cues; small cakes can dry out with overbaking.

Put the tin on a heatproof rest and leave the financiers in it for 10 minutes. Allow about 2 minutes to loosen the edges gently with a thin palette knife suitable for the tin's coating and transfer the cakes to the rack, keeping hands clear of the hot metal. Do not tear them out while fragile. If they will not release without damage, allow more time and loosen carefully rather than forcing them; add that actual wait and handling time.

Cool unstacked on the rack for a further 15 minutes, until comfortably warm rather than hot and the crumb has settled. Allow longer if needed and count it. Serve two mini financiers per person. They are intended to have lightly crisp edges and a tender, fully cooked almond centre, not a raw or gummy middle. Black tea and sliced ripe pear make simple accompaniments, prepared separately and excluded from this recipe's quantities and timetable. Best served on the day for the edge-and-centre contrast; no tested storage life is claimed.