Raspberry-Sour Cream Crumb Cake

Preheat oven to 350 degrees F (175 degrees C). Grease and flour a 10-inch springform pan.

Stir 1 cup flour, 2/3 cup sugar, and lemon zest together in a bowl; add melted butter and stir with a fork until the mixture turns crumbly. Set aside.

Mix 1 3/4 cup flour, 1 cup sugar, baking powder, baking soda, and salt together in a large bowl.

Whisk together the eggs, sour cream, and vanilla in another bowl until they are well blended. Add the egg mixture to the flour mixture in the large bowl and beat until you get a smooth and fluffy batter, about 2 minutes. Pour into the prepared pan; cover with an even layer of raspberries. Sprinkle the topping over the raspberries.

Bake in preheated oven until a toothpick inserted into the center comes out clean, 38 to 42 minutes. Cool on a wire rack for 20 minutes before removing sides. Dust with confectioners' sugar to serve.