This is a simple delicious no clean-up !! recipe !
you need one heavy duty ziplock bag a piece of parchment big enough to line the cake pan and a piece of wax paper
ok on parchment lay out the dry ingredients
2 c flour
1 t baking powder
1/2 t salt
1 t cinnamon
mix them together some I used a plastic knife
in ziplock bag break 2 eggs and blend with hands outside of bag until frothy add 1 c sugar mix well with egg then add 3-4 T oil and about 1/3 c milk and 1 t vanilla to bag mix well with hands outside bag dissolving sugar
ok now add dry to bag(you may need a helper to hold bag)
mix things gently here until all is incorporated
add a 1/2 c crushed walnuts
line cake pan with parchment, cut ziplock with scissors and empty contents into parchment lined pan spread evenly
cover top of cake with fresh blueberries about 1 c
crumb topping : on wax paper mix 1 t cinnamon 1 T each of butter,
flour and brown sugar, I used a knife to cut it all together. Spread crumbs on top of blueberry jeweled cake batter. bake about 20 mins at just under 400, enjoy !