Step 1: Preheat and Prep Your Pan
Preheat your oven to 350°F. Spray your bundt pan very generously with nonstick baking spray, getting every crevice covered.
Step 2: Mix the Dry Ingredients
Add the yellow cake mix, instant vanilla pudding mix, white sugar, brown sugar, and cinnamon into a large mixing bowl. Whisk them together until fully combined.
Step 3: Add the Wet Ingredients
Pour in the eggs, vegetable oil, water, and white wine. Beat with a hand mixer or whisk until smooth and fully combined without overmixing.
Step 4: Pour and Bake
Pour the batter into the prepared bundt pan. Bake for 50 to 60 minutes, or until a toothpick inserted into the thickest part comes out clean.
Step 5: Make the Glaze
While the cake is still hot, melt butter, white wine, and sugar together in a small saucepan over medium heat. Stir until the sugar fully dissolves, then remove from heat.
Step 6: Poke and Glaze
Use a bamboo skewer to poke holes all over the bottom of the cake while still in the pan. Pour the hot glaze slowly over the cake and let it soak for 15 to 20 minutes.
Step 7: Invert and Serve
Place a serving plate over the bundt pan and carefully flip it over. Let the cake rest until fully cooled before slicing and serving.