I just read your post. I have many of the recipe cards, and I found the one you are looking for. Here it is:

CAPPUCCINO CRUMB MUFFINS
Source: Great American Recipe Cards
Makes 12 muffins

2 cups all-purpose flour
1/2 cup granulated sugar
1/4 cup brown sugar
2 tsp baking powder
2 tsp instant coffee powder
1/4 tsp salt
1 tsp ground cinnamon
1 cu milk
1/2 cup melted butter or margarine
1 egg
1 tsp vanilla
3/4 cu semisweet chocolate mini chips or 4 oz semisweet chocolate cut into 1/2-inch pieces
FOR THE CRUMB TOPPING:
1/4 cup butter or margarine
6 Tbsp all-purpose flour
4 Tbsp brown sugar
1/2 tsp cinnamon

Preheat oven to 400 degrees F.

In a bowl, combine the flour, white and brown sugar, baking powder, coffee powder, salt, and cinnamon

In another bowl, mix together milk, melted butter, egg, and vanilla.

Pour the liquid ingredients into the dry mixture. Stir to combine, do not over-mix. Stir in chocolate. Spoon batter into paper-lined muffin cups.

Combine the crumb topping ingredients, using a pastry cutter. Sprinkle topping evenly over the unbaked muffins.

Bake at 400 F for 20 minutes or until toothpick comes out clean. Serve.

Hope this helps!