JANELLE:
Good morning. In order to help you I need you to do 2 things. If you know the size of the bundt pan in cups state so. If not fill it with cups of water to the top & state so in amount of cups. Then we must know the amount of cake batter. Tell us the size of the cake pan as stated in the recipe, ie, 9 inch or perhaps a 8, inch cake pan. If it mentions the depth like say 3,inch... state that as well. If not it would be a 2,inch cake pan.
Enjoy the rest of the day young lady.

~CHEF DUNASK.