S'mores Brownie Pie

Bahan-bahan (9 porsi)

• 1 and 1/2 cups (180g) graham cracker crumbs (about 12 full-sheet graham crackers)
• 1/4 cup (50g) granulated sugar
• 6 Tablespoons (85g) unsalted butter, melted
• 1/2 cup (8 Tbsp; 113g) unsalted butter
• 2 Tablespoons (30ml) vegetable oil or melted coconut oil
• 1 cup (200g) granulated sugar
• 2 large eggs + 1 egg yolk, at room temperature
• 2 teaspoons pure vanilla extract
• 3/4 cup (62g) unsweetened natural or dutch-process cocoa powder
• 1/2 cup (63g) all-purpose flour (spooned & leveled)
• 1/4 teaspoon salt
• 1 cup (180g) semi-sweet chocolate chips
• 24 –25 large marshmallows (1/2 of a standard package, or use mini marshmallows)