Berry Streusel Crumb Cake

Method

1. 1

   Step 1: Heat the oven to 350F. Grease a 9-inch square metal pan and line it with a parchment sling that overhangs two sides.

2. 2

   Step 2: Make the streusel first: stir 1 1/2 cups (190g) flour, the brown sugar, cinnamon and 1/4 tsp salt, then pour in the melted butter and stir with a fork until it forms damp clumps. Squeeze some into walnut-sized pieces and refrigerate while you make the batter.

3. 3

   Step 3: Whisk the remaining 1 1/2 cups (190g) flour with the baking powder and remaining 1/2 tsp salt. In a mixer, beat the softened butter with the granulated sugar 3 minutes, until pale and fluffy.

4. 4

   Step 4: Beat in the eggs one at a time, then the sour cream and vanilla. Add the flour mixture on low just until no dry pockets remain; the batter will be thick.

5. 5

   Step 5: Spread the batter in the pan. Stir the jam until loose, dollop it over the batter and spread gently to within 1/2 inch of the edges, then scatter the blueberries on top.

6. 6

   Step 6: Break the chilled streusel over the jam in a thick layer, mixing big clumps with small crumbs, until the surface is completely covered.

7. 7

   Step 7: Bake 50 to 55 minutes, until the streusel is deep golden and a skewer pushed into the cake between berries comes out free of wet batter. Cool in the pan at least 1 hour before lifting out and cutting into 9 squares.

• #vegetarian
• #brunch
• #make-ahead
• #crowd-pleaser