Whip Up a Speedy and Delicious Vegan Pumpkin Mousse Parfait – No-Bake, Dairy-Free pumpkin Dessert! In just under 10 minutes, you can enjoy this fluffy and easy vegan pumpkin dessert. If you're a fan of pumpkin pie filling but not so much the crust, this dairy-free treat is made for you. It's the perfect vegan dessert, especially after a hearty Thanksgiving dinner.