Preheat the oven to 375F degrees. Grease a 9-inch square baking pan.
In a small bowl, blend the streusel crumb topping ingredients together, working the butter into the flour until well incorporated, and set aside.
In large bowl with an electric mixer on low speed, beat all flour, sugar, cinnamon, baking powder, salt, butter, egg and milk for 30 seconds.
Increase the speed to medium and continue to beat, scraping down the sides of the bowl if necessary, until well blended.
Spread half the batter into the prepared pan and spread half the crumb topping over it. Cover with the remaining batter and then the rest of the topping.
Bake for about 30 to 40 minutes, or until a toothpick inserted in the center comes out clean.
Cool on a wire rack for 15-20 minutes before serving.
Notes
Serving size: 1/12th recipeWW Points: 12Check your WW Points for this recipe and track it in the WW app. (Must be logged into WW on a smartphone or tablet.)11SmartPoints (Green plan)11SmartPoints (Blue plan)11SmartPoints (Purple plan)6PointsPlus (Old plan)I got these fun variation ideas from my old Betty Crocker (1978) cookbook...Nutty Coffee Cake - Add 1/2 to 1 cup chopped walnuts or pecans to the streusel crumb topping.Blueberry Coffee Cake - Fold 1 to 2 cups blueberries into the batter.Orange Coffee Cake - Substitute 1/2 cup orange juice for 1/2 cup of the ilk. Beat in 2 to 3 tablespoons grated orange peel.Raisin Spice Coffee Cake - Beat in 1/4 teaspoon ground allspice and 1/4 teaspoon ground nutmeg and stir in 1/2 cup raisins.Chocolate Chip Coffee Cake - Stir in 1 cup mini chocolate chips.Peanut Butter and Jelly Coffee Cake - Substitute crunchy peanut butter for the margarine. After sprinkling with the remaining crumb topping, drop 1/4 cup grape jelly by teaspoonfuls onto the top.