Preheat oven to 350 degrees F. Coat a 13x9-inch baking pan with nonstick cooking spray.
In a large mixing bowl, whisk together oil, milk, eggs and vanilla.
In a separate large bowl, whisk flour, sugar, baking powder and salt. Stir in chopped apples.
Pour egg mixture into flour mixture. Pour half of the batter into prepared pan.
For the topping:
In a medium bowl,prepare streusel by combining brown sugar and cinnamon. Sprinkle half of streusel on top of the batter. Top with remaining batter. Sprinkle remaining streusel on top. Drizzle with melted butter.
Cover dish with aluminum foil. Bake for 25-30 minutes. Remove foil and bake an additional 10 minutes.
Dust with sifted powdered sugar, if desired.
Here are our top tips for storing coffee cake:
Store in an airtight container at room temperature for up to 2 days.
Store in an airtight container in the refrigerator for up to a week.
Wrap tightly with plastic wrap and store in an airtight container for up to 3 months.
We like our coffee cake warm. To reheat: Warm in microwave for 10 second increments until warm. To heat in the oven remove any plastic wrap, then wrap in aluminum foil. Preheat oven to 350 degrees F and heat for 6-8 minutes or until warm.Adapted from Lil Luna
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