"This best recipe for Starbucks Copycat Coffee Crumb cake comes together quickly using a cake mix and a divine buttery crumb topping. High altitude, tips for the best coffee cake...."
INGREDIENTS
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1 box Yellow or Vanilla cake mix (substitute with your favorite Gluten Free cake mix)
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(plus ingredients for cake mix; eggs, butter/oil and water/milk)
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2 sticks cold, salted butter, cut into cubes
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2 ¼ cups all purpose flour (I use organic) or substitute with GF AP Flour or Oat Flour
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1 ½ Tablespoons cinnamon
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1 ¾ cups brown sugar, packed
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1 ½ Tablespoons vanilla
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Pinch of salt
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Powdered sugar (optional, for dusting)