Baking · Old-Fashioned Classics

Old-Fashioned Oatmeal Cake

Old-Fashioned Oatmeal Cake
Old-Fashioned Oatmeal Cake
4.8 / 5
12 squares

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Ingredients

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  • 1 ⅛ cups (100 g) rolled oats, soaked in 300 ml boiling water
  • 1 stick (115 g) butter, softened
  • 1 ¼ cups (250 g) sugar (150 g soft light brown and 100 g caster)
  • 2 eggs and 1 tsp vanilla extract
  • 1 ½ cups (170 g) all-purpose flour
  • 1 tsp baking soda, 1 tsp cinnamon, ¼ tsp nutmeg and ½ tsp fine salt
  • ¾ stick (85 g) butter, 100 g soft light brown sugar and 60 ml heavy cream, for the topping
  • 1 cup (80 g) shredded coconut and 60 g pecans, chopped, for the topping

Method

  1. Soak. Pour 300 ml boiling water over the oats, stir once and leave for 20 minutes. Oven to 350°F (180°C, fan 160°C); grease and line a 23 cm (9 in) square metal pan.
  2. Cream. Beat the butter with both sugars for 2–3 minutes until fluffy, then beat in the eggs one at a time and the vanilla.
  3. Fold. Stir in the soaked oats — now a thick porridge — then fold in the flour, baking soda, cinnamon, nutmeg & salt until just combined.
  4. Bake. 30–35 minutes, until risen, springy and a skewer comes out clean. Leave the cake in its pan.
  5. Top. Melt the butter, brown sugar & cream in a small pan and simmer 1 minute; stir in the coconut, pecans, vanilla and a pinch of salt. Spread gently over the warm cake.
  6. Broil. 2–3 minutes under a hot broiler until bubbling and deep golden. Do not take your eyes off it — it burns fast. Cool before cutting into 12 squares.
Granny's tip

Granny grilled the topping kneeling at the open oven door with the light on — she said the difference between caramelized and cremated is about forty seconds, and no cake ever burned while she was watching it.

Tips for the moistest oatmeal cake

Give the oats the full soak

Twenty minutes in boiling water turns them soft and custardy — that soak is where all the moisture in this cake comes from.

Never leave the broiler

The topping caramelizes in 2–3 minutes and burns in four. Stay at the oven door and turn the pan if it colors unevenly.

Metal pan only

Glass and ceramic dishes can crack under a hot broiler — bake and finish this cake in a metal pan.

Questions, answered

Do I really need to soak the oats for oatmeal cake?

Yes — it is the whole point of the recipe. Twenty minutes in boiling water softens the oats into a thick porridge that carries moisture right through the crumb, so the cake stays soft for days. Skip or shorten the soak and you get chewy flecks of oat and a noticeably drier cake.

Why is my oatmeal cake dense or heavy?

Usually one of three things: the oats were not soaked for the full 20 minutes, the batter was overmixed once the flour went in, or the baking soda was stale. Fold just until no dry streaks remain, and test your baking soda — a pinch should fizz hard in vinegar.

Can I make oatmeal cake ahead or freeze it?

It keeps beautifully — covered at room temperature it is still moist on day four, and many swear it is better on day two. Freeze whole or in squares, well wrapped, for up to 3 months; thaw at room temperature, then warm briefly in a low oven to bring the topping back.

Can I use evaporated milk instead of cream in the topping?

Yes — the original 1950s recipe used evaporated milk. Swap the 60 ml heavy cream for 60 ml evaporated milk, or at a pinch whole milk plus an extra 15 g of butter. The topping bubbles and caramelizes under the broiler exactly the same way.

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