This pistachio cake with orange glaze is a bright and citrusy dessert that's perfect for any occasion. The cake is made with a combination of flour, sugar, baking powder, salt, eggs, milk, oil, vanilla extract, and pistachio pudding mix. Mix all the ingredients together, pour the batter into a greased cake pan, and bake for 30-35 minutes. Once the cake has cooled, drizzle with an orange glaze made with powdered sugar, orange juice, and orange zest for a beautiful and delicious finish.