In a skillet, heat the olive oil over medium heat, add sliced onion, and cook until soft (about 7-10 minutes). Reduce heat and caramelize for another 20-30 minutes, adding garlic and crushed red pepper in the last 5 minutes.

Preheat oven to 475°F. Roll out pizza dough into a round and place on parchment paper, piercing the surface with a fork.

Spread pumpkin puree on the dough, add caramelized onions, and sprinkle gouda cheese evenly.

Slide the pizza onto the preheated stone or baking sheet. Bake for 12-15 minutes until crust is golden and cheese is bubbly.

Remove from oven, cool for a minute, garnish with parsley, slice, and serve warm.