Mimi's Cafe's Buttermilk Spice Muffins

I made these couple weeks ago and boy, are they good! I got the recipe off of Mimi's Cafe's website. I used the jumbo muffin tin but it says you can use a regular sized one. I think I put too much sugar on top, as you can tell from the picture. If I make these again, I will use brown sugar instead of white.

Here's the recipe:

BUTTERMILK SPICE MUFFINS

Muffin Batter:		Nut Topping:
1 cup sugar		1/2 cup sugar
1/2 cup butter or margarine		1 cup walnuts, finely chopped
3 eggs		1/2 teaspoon cinnamon
2 1/2 cups flour		1/2 teaspoon nutmeg
2 teaspoons baking soda
1 teaspoon nutmeg
1/2 teaspoon cinnamon
3/4 cup + 1 tablespoon buttermilk
Grease the baking tins with butter or margarine
Method
Preheat oven to 375°. In a mixing bowl, cream the sugar and the butter together with an electric mixer. When they are thoroughly mixed, add eggs and beat one more minute. Sift the flour into a separate bowl, together with the baking soda, nutmeg and the cinnamon. Add the flour and the buttermilk to the first mixture, mix at low speed until smooth. To avoid lumps in the batter, add the wet and dry ingredients alternately, in small amounts. Make the nut topping: Mix all ingredients together in a small bowl. Grease muffin tins with butter or margarine. You can also use paper baking cups. Fill each cup 3/4 full of batter. Add a full, rounded tablespoon of nut topping on top of each muffin cup of batter. Bake immediately or the topping will sink to the bottom of the muffin. Bake at 375° for 20-25 minutes, until golden brown. A toothpick inserted in the middle of the muffin should come out dry. Home ovens heat differently from commercial ovens so you may need to adjust the temperature or the baking time accordingly. Recipe yields 12 standard-size muffins, or six Mimis size muffins. If using the jumbo muffin pans, reduce the oven temperature by 25° and increase the baking time 5-10 minutes.