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This recipe has been a 3-generation family favorite for the BEST COFFEE CAKE! Buttery, tender streusel and cake flavored with spices and vanilla. Super easy, one bowl, and a total crowd-pleaser!
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5 from 6 votes

Grandma's Best Coffee Cake

This is my family's favorite COFFEE CAKE recipe! Buttery, brown sugary, perfectly spiced tender cake that we serve every Christmas morning.
Prep Time10 mins
Cook Time35 mins
Total Time45 mins
Course: Breakfast
Cuisine: American
Servings: 15 -18
Author: Hayley Parker, The Domestic Rebel


  • 3 cups all-purpose flour
  • cups granulated sugar
  • cups brown sugar
  • teaspoons baking soda
  • teaspoons baking powder
  • teaspoons nutmeg
  • 2 teaspoons ground cinnamon
  • 1/2 teaspoon salt
  • 1 cup vegetable or canola oil
  • 1 egg lightly beaten
  • cups buttermilk
  • 1 teaspoon vanilla extract


  • Preheat oven to 350 degrees F. Liberally grease a 9x13" rectangular baking dish with cooking spray; set aside.
  • In a large bowl, combine the flour, sugars, baking soda, baking powder, nutmeg, cinnamon, and salt and whisk together until incorporated. Pour in the oil and stir to combine until moist crumbs come together. Reserve 2 cups of the crumbs.
  • Add in the beaten egg, buttermilk, and vanilla to the original bowl and stir until a thin batter comes together. Do NOT overmix the batter; some lumps are okay. Pour the batter into the prepared pan in an even layer. Sprinkle the top of the batter evenly with the crumbs.
  • Bake for 30-35 minutes or until a toothpick inserted near the center comes out clean or with moist crumbs. Cool about 15-20 minutes before cutting into squares to serve, or cool longer if you want prettier squares as this is a very tender cake!