Step 1

Preheat the oven to 400F. Butter or spray a 12-cup muffin pan or line with paper liners.

Step 2

In a small bowl, whisk together flour, sugar, and salt. Add the butter and cut it in with a pastry blender or your fingers until the mixture is very crumbly.

Step 3

In a large bowl, whisk together flour, sugar, baking powder, and salt.

Step 4

In another bowl, whisk together milk, eggs, oil, melted butter, vanilla, and lemon zest. Fold the egg mixture into the flour mixture, stirring just until combined. Fold in the raspberries.

Step 5

Divide the batter among the muffin cups. Sprinkle the streusel over the muffins.

Step 6

Bake for 18 to 20 minutes or until golden brown on top and a wooden pick inserted in the center comes out clean. Let cool for a few minutes in the pan before removing.