1/2cupbutter (unsalted)can use vegan butter or Spectrum organic shortening
1cupgranulated sugar (organic)
2eggs
1teaspoonvanilla extract
2cupsall-purpose flour (gluten-free)Bob's Red Mill Gluten-Free 1 to 1 Baking Flour
1/2teaspoonsea saltcan omit for low-sodium version
1/2teaspoonbaking sodacan use sodium-free baking soda
1/4cupyogurtsour milk, buttermilk, or kefir
2bananasripe, mashed with a fork
Streusel mixture
1/2cupbrown sugar
2tablespoonsall-purpose flour (gluten-free)Bob's Red Mill Gluten-Free 1 to 1 Baking Flour
2tablespoonsbutter (unsalted)melted
2teaspoonscinnamon
1/2cupwalnutsfinely chopped
Instructions
Preheat oven to 350Fº/180Cº/gas mark 4. Grease a 6 ½” by 10” cake pan (or similar size).
Cream butter and sugar in mixing bowl.
Add eggs & vanilla extract, beating until fluffy.
Sift dry ingredients together, then add to batter with yogurt and mashed bananas.
Put half of batter into prepared pan.
Combine streusel ingredients in a bowl and mix well. Sprinkle half over the batter in the pan.
Scrape in rest of the batter and smooth the top, then sprinkle over the rest of the streusel.
Bake for 35-50 minutes (will depend on the size of your pan). Top should be firm in the center and spring back when pressed with a finger, but be careful as the sugar in the streusel will be very hot.
Cool complete on a wire rack before cutting into squares.