Step 1

In a large bowl, mix yogurt, eggs, sugar and oil. In a separate bowl, mix together the flour, baking powder and baking soda.

Step 2

Add the dry ingredients and stir until well mixed.

Step 3

Fold in raspberries and fill muffin cups 3/4 full. (This recipe makes about 18 regular sized muffins.)

Step 4

To make streusel, use a pastry blender or a fork to mash ingredients for several minutes, until butter is well incorporated and the consistency more like crumbles than sand.

Step 5

Sprinkle topping over batter and bake bake muffins at 400° for 18-22 minutes.