Ingredients

• Dry
• 232g (8.2 oz) Gluten Free Flour (2 C + 2 T spoon & level)
• 56g (2 oz) Corn Starch (1/2 C spoon & level)
• 2 tsp Aluminum Free, Double Acting Baking Powder (8g)
• 1/2 tsp Baking Soda (2.5g)
• 1/4 tsp Salt (1.5g)
• Wet
• 170g (6 oz) Unsalted Butter, room temperature (1 1/2 sticks or 12 T)
• 300g (10.5 oz) Cane Sugar (1 1/2 C)
• 4 Large Eggs (200g)
• 300g (10.5 oz) Sour Cream, full fat (1 1/4 C)
• 1 1/2 tsp Pure Vanilla Extract (7.5 ml)
• Streusel
• 56g (2 oz) Gluten Free Flour
• 50g (1.8 oz) Light Brown Cane Sugar (1/4 C packed)
• 1 1/2 tsp Ground Cinnamon (4g)
• 1/8 tsp Salt (pinch)
• 42g (1.5 oz) Unsalted Butter, very cold (3 T)
• Optional: 3/4 C Walnuts or Pecans, chopped (about 114g or 4 oz)

Directions

1. Bring butter and eggs to room temperature

2. Take sour cream out of refrigerator about 30 minutes before mixing (preferred)

3. Move oven rack to center

4. Preheat oven to 350 Fahrenheit (177 C)

5. Grease cake pan, we use our non-stick baking Goop

6. Make cake!

7. Step 1: Whisk together dry ingredients in a medium bowl. Set aside.

8. Step 2: Add butter and sugar from the wet ingredient list into the bowl attached to the stand mixer or large mixing bowl. Cream together for about 4-5 minutes.

9. Step 3: While the mixer is doing its thing, combine the ingredients for the streusel, except the butter, into a medium bowl. Grate the butter into the mix. Use your fingers to blend and pinch in the butter. The streusel should resemble small baby peas and course sand. Set aside.

10. Step 4: Turn mixer to med-low and beat in eggs, one at a time. Scrape down the sides and bottom of bowl. Turn the mixer back on to med-low and add the sour cream and vanilla. Beat until combined. Scrape down the sides of the bowl and mix in.

11. Step 5: Turn the mixer to low and slowly spoon in the dry flour mix. Blend until just combined. Turn the mixer off and continue to stir with a silicone spatula, bringing up any batter from the bottom and along the sides to fully integrate.

12. Step 6: Pour half of the batter into the cake pan. Sprinkle about 1/2 of the streusel onto the surface, (for a thicker band of streudel, sprinkle up to 2/3). Cover with the rest of the cake batter and sprinkle the remaining streusel on top.

13. Step 7: Place cake in the middle of a preheated 350 F/177 C oven and bake for 45-50 minutes. A toothpick inserted in the center should come out clean.

14. Step 8: Place cake on a wire cooling rack and allow to sit for at least 30 minutes before removing the pan. If you have a bundt cake pan, simply place a platter face down on top of the pan and invert the cake onto a platter. If you have a tube pan, and you want the streusel to be shown top side up, take care to remove the cake from the pan and transfer to a platter.

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