Pumpkin Crisp with Spiced Oat Topping (Easy Fall Dessert)

Ingredients

• 3/4 cup (75 g) old-fashioned rolled oats
• 2/3 cup (85 g) all-purpose flour
• 3/4 cup (150 g) packed light brown sugar
• 1/2 cup (55 g) chopped pecans
• 1 teaspoon ground cinnamon
• 1/2 teaspoon ground ginger
• 1/4 teaspoon ground nutmeg
• 1/4 teaspoon fine salt
• 1/2 cup (113 g) cold unsalted butter, cubed
• 1 (15 oz / 425 g) can pumpkin puree
• 3 large eggs
• 1 cup (240 ml) evaporated milk
• 1/2 cup (100 g) granulated sugar
• 1/4 cup (50 g) packed light brown sugar
• 2 teaspoons vanilla extract
• 1 1/2 teaspoons pumpkin pie spice
• 1/2 teaspoon ground cinnamon
• 1/2 teaspoon fine salt
• Vanilla ice cream or whipped cream, optional