One-Hour Soft Monster Cookies

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Chewy, thick monster cookies packed with colorful candies and oats, ready in just one hour. This american-inspired desserts ready in about 32 minutes layers (2 sticks), softened unsalted butter, packed brown sugar, granulated sugar into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 150 calories and feeds 24, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 20 min Cook: 12 min Serves 24 American cuisine 150 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat your oven to 350°F (175°C). In a large mixing bowl, beat 1 cup softened unsalted butter, 1 cup packed brown sugar, and 1/2 cup granulated sugar until light and fluffy, about 3 minutes.
  2. Step 2: Add 2 large eggs and 1 tsp vanilla extract to the butter mixture and beat until combined.
  3. Step 3: In a separate bowl, whisk together 2 1/2 cups all-purpose flour, 1 tsp baking soda, and 1/2 tsp salt. Gradually add this to the wet ingredients and mix until just combined.
  4. Step 4: Fold in 1 1/2 cups rolled oats, 1 cup M&M's candies, and 1 cup chocolate chips until evenly distributed.
  5. Step 5: Using a cookie scoop or spoon, drop rounded tablespoons of dough onto a parchment-lined baking sheet, spacing them 2 inches apart.
  6. Step 6: Bake for 10-12 minutes until the edges are lightly golden but the centers remain soft.
  7. Step 7: Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.

Equipment for this recipe

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Frequently asked questions

How long does One-Hour Soft Monster Cookies take to make?

Total time is about 32 minutes (20 min prep + 12 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.

How do I store leftover One-Hour Soft Monster Cookies?

Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.

Can I substitute ingredients in One-Hour Soft Monster Cookies?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale One-Hour Soft Monster Cookies for a different number of people?

The recipe is written for 24 servings. Multiply each ingredient by (your serving target / 24). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with One-Hour Soft Monster Cookies?

American desserts like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.