In a large, microwave-safe bowl, combine the butter, marshmallows, vanilla and salt.
2 tablespoons (28 grams) unsalted butter, 3 cups (141 grams) marshmallows, 1/4 teaspoon vanilla, pinch of salt
Microwave on high for 20 seconds, then stir. Continue microwaving in 20-second intervals, stirring after each, until the mixture is fully melted and smooth. I only need about 40 seconds total.
Stir in orange food coloring until you achieve the desired pumpkin color.
orange food coloring
Remove from microwave and stir in the Rice Krispies, mixing until well combined.
4 cups (108 grams) Rice Krispies
Let the mixture cool slightly so it’s easier to handle but still warm. Grease your hands with butter, coconut oil or nonstick spray and form small pumpkin-shaped balls (about 1/4 cup or 30 grams in size). While the pumpkins are still soft, press a broken pretzel rod into the top center of each one to create the stem.
mini pretzels
Store undecorated pumpkins in an airtight container at room temperature for up to 3 days. If you're in a humid climate, it might help to store them in the fridge, though they may lose a bit of their softness.
Add the buttercream the day of serving. In a small bowl, beat the softened butter until creamy. Gradually add powdered sugar and the pinch of salt, mixing until smooth. Add milk as needed, starting off with 1/2 teaspoon. You might need up to 1 1/2 teaspoons of milk total. Stir in green food coloring.
2 tablespoons (28 grams) unsalted butter, 1/2 cup (60 grams) powdered sugar, 1 1/2 teaspoons milk, pinch of salt, green food coloring
Use a piping bag with a small round tip to pipe a small leaf next to the pretzel stem on each pumpkin.
Store in an air tight container until ready to serve.