Cinnamon-Chocolate Chip Sour Cream Coffee Cake
Yields 1 9×13 cake
Source: (Deena) Mostly Food Stuffs
3 cups flour
1 teaspoon baking powder
1-1/2 teaspoons baking soda
1/2 teaspoon salt
1 stick (4 ounces) unsalted butter, softened to room temperature
1-1/2 cups sugar
3 eggs, separated
1-1/2 teaspoons vanilla extract
16 ounces sour cream
12 ounces chocolate chips (usually one package)
1/2 cup sugar mixed with 1 tsp cinnamon
Preheat your oven to 350 degrees, grease and flour a 9×13 cake pan.
Sift together the flour, baking powder and baking soda, and set aside. Whip the egg whites into stiff peaks, and set aside as well.
Cream together the butter and sugar until it’s light and fluffy. Add the egg yolks and vanilla, and beat until well-incorporated. Gently mix half the sour cream into the batter, then half the flour mixture, then repeat with the remaining halves (being careful not to over-mix). Mix in about a third of the egg whites to lighten the mixture, then gently fold in the remainder, again being careful not to over-mix.
Pour half the batter into your prepared cake pan. Sprinkle on half the chocolate chips, and half the cinnamon-sugar mixture. Gently spread the remaining batter on top, and finish with the remaining chocolate chips and cinnamon-sugar. Bake until a tester comes out clean, ~40-50 minutes. Let cool slightly, then devour.
thibeaultstable.com 
This is one of those recipes that you just need to bake.
Yeah baby…this looks dangerous to have around!
We love this recipe! Ours is a touch different but we love it..Ann yours looks delish..i made a coffee chocolate sour cream one yesterday..not half as good as this.:)
I just need a really good cup of coffee and piece of this delicious coffee cake and it would be a good start to my day. This looks awesome.Velva
ANN, I made this cake this morning and it was truly delicious. I had to reduce the chocolate chips because my husband, who loves chocolate cake and pie, does not like chocolate chips!
This looks sinfully good!
going to make this for easter at the beach, looks so good!
This recipe was given to me many years ago when my children were very young. It was a staple for them and now a family staple for my grandchildren.Thank you for posting this traditional dessert of comfort and family bonding.