Blueberry Crumble Muffins made easy! My girls have been begging me to bake a batch of these. The simple crumb topping takes these muffins to the next level! Save this post and plan to bake asap 🫐 Start by making the crumb topping by mixing together; 1/4 cup cold butter, 1/2 cup sugar, 1/2 cup flour, 1 tsp cinnamon and a pinch of salt. Set in the fridge while you make the muffins batter. In a large bowl whisk together 1 egg, 1/3 cup milk, 1/3 cup neutral oil and 1 tsp vanilla. Next add in 1 1/2