This lemon blueberry coffee cake recipe is a delicious combination of sweet and tangy flavors. The cake is moist and fluffy, with bursts of juicy blueberries throughout. The streusel topping is made with brown sugar, cinnamon, and chopped almonds, adding a delicious crunch to every bite. To make the cake, you'll need flour, sugar, baking powder, salt, butter, eggs, milk, vanilla extract, lemon zest, and fresh blueberries. Mix the dry ingredients for the cake, then add the wet ingredients and mix until smooth. Fold in the lemon zest and blueberries, then pour the batter into a greased baking dish. Mix the streusel ingredients and sprinkle over the top. Bake for 35-40 minutes, or until a toothpick inserted in the center comes out clean. Serve warm with a cup of hot tea.