You will need a bundt pan that holds at least 10 cups. My leaf design pan holds only 9 cups, so I made two single serving cakes for myself. "Quality control". :).

Preheat your oven to 350°F. Also, it is best to start with room temperature ingredients whenever possible.

Spray your bundt pan with a good baking spray and use a pastry brush to ensure it is thoroughly coated.

Whisk together the dry ingredient for the batter in a large bowl.

In a medium bowl, whisk together the wet ingredients.

In another medium bowl or food processor, mix the dry ingredients for the streusel. Then, cut the cold butter through the mix with a pastry blender or process it with the food processor until it is crumbly. The remaining butter chunks should be no larger than pea size.

Add the wet batter ingredients to the dry batter ingredients and mix until combined.

Start by adding either streusel or batter into your pan. Alternate the two making sure that each layer of streusel is completely covered by at least an inch of batter. Use a spatula to spread it all the way to the edges of the pan. Then, tap your pan on your countertop padded with a folded kitchen towel several times to remove air bubbles.

I like to make a few layers, but you are welcome to make only a couple. It is best to save a layer of streusel for the last layer, as this will make a lovely, crunchy layer of deliciousness on the bottom of your cake once it's inverted.

Bake your bundt for at least 80 minutes or until it passes the "toothpick test". Invert and cool on a wire rack. Keep in mind that it will not fully set until it is thoroughly cooled. I started with the streusel sp I turned out the cake immediately to avoid the sugar sticking to my pan and ruining the design of the cake. You can wait, but no longer than maybe 10 minutes so it comes out clean and doesn't get soggy.