S'mores Brownie Pie

The method's theirs. Go give them the click.

Ingredients

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)

The steps live at sallysbakingaddiction.com. We don't copy them: Sally's Baking Addiction wrote this recipe, and your visit supports them.