Ultimate Monster Cookie Ice Cream Cake with Easy Peanut Butter Fudge
A playful and indulgent ice cream cake featuring crunchy monster cookie bits, creamy peanut butter fudge, and smooth vanilla ice cream layers. Perfect for celebrations or a nostalgic treat.
- Prep Time: 20 minutes
- Cook Time: 12 minutes
- Total Time: 4 hours 32 minutes
- Yield: 12 servings 1x
- Category: Dessert
- Cuisine: American
Ingredients
Scale
- 1 ½ cups monster cookie mix (oats, M&Ms, chocolate chips, nuts)
- ½ cup unsalted butter, melted
- 2 tbsp brown sugar, packed
- 1 quart vanilla ice cream, softened
- 1 cup monster cookie pieces (reserve some for topping)
- 1 cup creamy peanut butter (natural, no-stir preferred)
- ½ cup unsalted butter
- 1 ½ cups powdered sugar, sifted
- 2–3 tbsp heavy cream
- 1 tsp vanilla extract
- Extra monster cookie pieces or mini M&Ms for topping
- Optional: melted chocolate or caramel sauce for drizzle
Instructions
- Preheat oven to 350°F (175°C). In a medium bowl, mix melted butter, brown sugar, and monster cookie mix until moistened. Press firmly into bottom of pan. Bake 10-12 minutes until golden and set. Cool completely.
- In a medium bowl, beat peanut butter and butter until smooth. Gradually add powdered sugar and vanilla extract, alternating with heavy cream, until fudge is thick but spreadable. Set aside at room temperature.
- Allow vanilla ice cream to soften about 10 minutes. Fold in reserved monster cookie pieces gently. Spread half over cooled cookie base, smoothing top with spatula.
- Dollop peanut butter fudge over ice cream layer and gently spread out. Optionally swirl fudge lightly into ice cream for marbled effect.
- Spread remaining monster cookie ice cream over fudge layer. Sprinkle extra cookie pieces or mini M&Ms on top.
- Cover pan tightly with plastic wrap or foil and freeze at least 4 hours or overnight to set fully.
- To serve, let cake sit at room temperature for 10 minutes. Use a sharp knife warmed in hot water for clean cuts.
Notes
Use a hot knife warmed in hot water for clean slicing. Press cookie base firmly to prevent crumbling. Keep cake tightly wrapped to avoid freezer burn. Can be made up to a week ahead. For gluten-free or vegan versions, use appropriate substitutions.
Nutrition
- Serving Size: 1 slice (1/12th of c
- Calories: 350
- Sugar: 30
- Sodium: 150
- Fat: 12
- Saturated Fat: 5
- Carbohydrates: 45
- Fiber: 3
- Protein: 6
Keywords: monster cookie, ice cream cake, peanut butter fudge, easy dessert, party dessert, no bake, layered cake