(I had never made a bundt cake before, so wanted to stick with mixes before branching out.) On my first attempt, a pumpkin cake with streusel filling, I carefully greased and floured the pan, baked, and allowed it to cool for quite a while, probably over half an hour, before removing it from the pan. It came out wonderfully.
https://www.chowhound.com/post/avoid-bundt-cake-disaster-355423
The second attempt (strawberry bundt cake) fell apart into an ugly mess that could not be aesthetically salvaged. I assumed that I had tried to remove the cake too early. However, I have seen several posts and comments that indicate that the cake should not be left in the pan for too long.
https://www.chowhound.com/post/avoid-bundt-cake-disaster-355423
Cooling butter cakes: After removing butter cakes from the oven, let them stand in their baking pans on wire racks for 10 minutes, or as the cake recipe directs. Run a knife around the edge of the cake to loosen it from the sides of the baking pan. Using oven mitts or hot pads, place a wire cooling rack on top of the cake and baking pan. Turn cake over so wire rack is on the bottom. Gently shake the cake to release it from the baking pan. Remove the baking pan and peel off the paper liner from the cake, if one was used.
http://recipes.howstuffworks.com/tools-and-techniques/how-to-bake-a-cake4.htm
When it comes to food, presentation is everything. A Bundt® or shaped cake delights the eye, alerts taste buds and sets the stage for the delectable serving to follow. How can anyone resist a slice of a Bundt cake. As they say, first impressions are truly important.
https://www.thespruce.com/use-a-bundt-or-shaped-cake-pan-1907150
Convenience Features. 1  A 10 - 12 cup Bundt® will accommodate a standard cake mix or recipe. 2  For a 6 - 9 cup size - adjust batter or use a single-layer cake mix or recipe. 3  Cake mixes specially designed for the Bundt pans can be purchased through Nordic Ware or other retailers.
https://www.thespruce.com/use-a-bundt-or-shaped-cake-pan-1907150
Quick Answer. Removing a pound cake from a Bundt pan requires turning the cake over, a maneuver known as inverting. The top of the cake is turned upside down over a plate. The cake slides onto the plate and is ready for further cooling or a topping. Continue Reading.
https://www.reference.com/food/turn-bundt-pound-cake-over-out-pan-44e5745246d2a841
A 10 - 12 cup Bundt® will accommodate a standard cake mix or recipe. For a 6 - 9 cup size - adjust batter or use a single-layer cake mix or recipe. Cake mixes specially designed for the Bundt pans can be purchased through Nordic Ware or other retailers.
https://www.thespruce.com/use-a-bundt-or-shaped-cake-pan-1907150
I’ve seen recipes for the 12-cup pans to bake anywhere from 35 minutes to an hour. Bundt-lette Pans bake from 15 to 35 minutes. Bundt muffin pans 12-20 minutes. Some recipes say cool in the pan on a wire rack for 5 to 10 minutes. Others may say cool cake completely in pan. It all depends on your recipe. cookingkay1955 · 9 years ago.
https://answers.yahoo.com/question/index?qid=20080731093340AAC6qmi
Depending on how you prepare the batter, an 11x13 pan (usually  filled 1/3 of the way full) should bake in approximately 30-35  minutes at 350-375 degrees Fahrenheit. Start…ing at the 25 minute  mark you should check the cake every 5 minutes with a toothpick,  inserting it into the center of the cake.
http://www.answers.com/Q/How_long_do_you_leave_a_bundt_cake_in_the_pan_after_baking_the_cake
After baking, leave the cake in the pan for 10 minutes or so to cool before removing and letting it cool further. Cassandra Cruz.
http://www.answers.com/Q/How_long_do_you_leave_a_bundt_cake_in_the_pan_after_baking_the_cake
how long to cool a bundt before flipping
Cool a bundt for 5 to 10 minutes before flipping. It takes 5 to 10 minutes to cool a bundt before flipping.