Heat the Oven - Heat the oven to 350°F (177ºC). Grease and lightly flour a 9-inch round cake pan.
Make the Streusel Topping - In a small bowl, combine flour, coconut sugar, and cinnamon. Mix in solidified coconut oil into the sugar mixture until crumbly in texture. Stir in the chopped pecans and set aside.
Mix the Dry Ingredients - In a medium bowl, combine flour, baking powder, baking soda, cinnamon, and salt. Set aside.
Cream the Oil and Sugar - In a stand mixer fitted with the paddle attachment, add the solidified coconut oil and coconut sugar. Mix on medium speed until creamy, about 2 minutes.
Add the Eggs - Scrape down the sides of the bowl. Add eggs one at a time, mixing on medium speed until mixed well, about 30 seconds for each addition.
Add the Pumpin and Apple Sauce - Add the pumpkin puree, applesauce, and vanilla extract. Mix on medium speed for 30 seconds.
Make the Batter - Fold the flour mixture into the pumpkin mixture until no streaks of flour are left. Do not overmix.
Assemble the Cake - Spread the cake batter into the prepared cake pan. Sprinkle the streusel topping over the batter. If desired, add chopped pecans. Allow batter to sit for 10 minutes before baking.
Bake - Bake for 40 to 45 minutes, or until a wooden toothpick inserted in the center comes out clean.
Cool - Cool the coffee cake in the pan on a wire rack for 20 minutes. Run a knife around the edges to loosen it, then carefully transfer the cake to a wire rack to cool completely before serving.
Make the Yogurt Topping - In a small bowl, whisk together yogurt and maple syrup. Drizzle on top of the coffee cake right before serving.
Notes
Coconut Oil Substitute: Use softened butter or margarine.
White Whole Wheat Flour Substitute: Use all-purpose, gluten-free, or whole wheat flour. The texture of the cake and baking times will differ slightly.
Coconut Sugar Substitute: Use granulated sugar, brown sugar, or a mixture.
Yogurt Options: Use dairy or plant-based yogurt, such as soy, coconut, or almond. Greek yogurt can be used for a slightly thicker topping.
Storing: Store in an airtight container for up to 4 days. Wrap and freeze for up to 2 months.