Preheat oven to 400°F. Lightly grease muffin pan or line with paper baking cups..
For Muffins: In medium bowl, blend together Krusteaz Cranberry Quick Bread Mix, water, oil and eggs. Spoon batter into prepared muffin cups, filling 2/3 full. Set aside.
For Streusel: In small bowl, stir together sugar and flour. Cut in butter with fork or pastry knife until mixture is crumbly. Sprinkle over batter in muffin cups.
Bake 18-20 minutes or until toothpick inserted into center comes out clean.