Heat the oven to 400F degrees. Grease the cups of a regular 12-cup muffin tin.
Prepare the streusel topping by mixing together in a small bowl the pecans, brown sugar, flour and butter until well blended. Set aside.
In a large bowl mix together the milk, oil, orange peel and egg until well blended.
Stir in the flour, strawberries, sugar, baking powder and salt just until blended.
Distribute the batter evenly among the 12 muffin cups. They should be about 2/3 full.
Sprinkle the streusel topping evenly over the muffin batter.
Bake 15 to 20 minutes, or until a wooden pick inserted in the center comes out clean.
Remove from the oven and let cool in the pan for about 5 - 10 minutes. Carefully remove the muffins from the pan. You may have to loosen around the edges with a sharp knife. Place on a rack to cool a bit. Enjoy warm.