...I'd like to make various desserts for 20 people. Suggestions?
You may need more ingredients. I would think
mini desserts i.e. mini pecan & pumpkin pies, mini cheesecakes (top w pie filling - cherry blueberry etc.), brownies, rugalach, bar cookies, chocolate dipped strawberries, thumb print cookies, truffles, petite fours, etc. similar to:
Mini Desserts
There is a large pumpkin cake I've had my eye on. Perhaps you can make the cake & cut it into small portions:
Luscious Four-Layer Pumpkin Cake
RecipeDetail
(The caramel topping reminded me of a pumpkin roll Paula made recently.)
Pumpkin Tirrmisu (T&T)
Super-Simple Pumpkin Tiramisu Recipe at Epicurious.com
Cheesecake cookie cups (Use any fuit pie filling of choice -- cherry, blueberry, lemon etc)
Cheesecake Cookie Cups (T&T)
Blueberry & Custard Filled Stars (T&T)
BLUEBERRY & CUSTARD FILLED STAR PUFFS
Posted a recipe for puffy stars in one of the threads for unusual or easy Holiday cookies...
TNT - Cut star shapes out of puff pastry, bake, let cool & dip in melted white or dark chocolate. If I recall, I posted a recipe for easy rugelach. Try a search here.
There's also a brownie recipe covered with ganache on the Hershey's site.