Crumbl 🙀 Peanut Butter Bar Cookies

You'll love this Crumbl Copycat recipe for Peanut Butter Bar Cookies! These extra-large peanut butter oatmeal cookies are topped with a decadent fudge-y buttercream. Easy to make, easy to freeze for later, and completely delicious!

Unbalanced

% Daily Values based on a 2,000 calorie diet

Step 1

Line two baking sheets with parchment paper.

Step 2

In lg. bowl, use mixer with beaters to cream together softened butter & sugars. Beat (2-3 min.) until totally combined, smooth, & a bit fluffy.

Step 3

Add peanut butter & vanilla; beat until combined. Add egg; beat until just combined.

Step 4

Sprinkle flour, oats, baking soda, & salt over mixture; beat until just combined. Use spatula to scrape sides of bowl & incorporate any remaining streaks of flour. (Dough will be soft & a bit sticky.)

Step 5

Use a 1/3C scoop to portion 7-8 cookies. Place on cookie sheets at least 3" apart. Lightly pat down tops so they are slightly flattened.

Step 6

Bake cookies (16-18 min.), one sheet at a time, until cookies are lightly crackled on top & edges are just turning golden. (Don't overbake.)

Step 7

Cool on cookie sheets for a few minutes; then transfer to a cooling rack to finish cooling.

Step 8

In sm. bowl, slowly melt unsweetened chocolate in micro. until totally melted (use short intervals, about 20-30 sec. & stir in between). Set aside to cool (15 min.)

Step 9

Meanwhile, add butter to lg. bowl; use mixer to beat it until creamy (1-2 min.) Add powdered sugar in sm. amounts, beating it until completely combined & very fluffy (3-4 min.)

Step 10

Add melted, cooled chocolate, cream, & vanilla; beat (1 min.) until combined & fluffy. Optional: add a tiny pinch of salt for more flavor.

Step 11

Spread frosting (3T per cookie) on cooled peanut butter oatmeal cookies; store in fridge.

Step 12

Unfrosted cookies may be stored at room temp. in an air-tight container (up to 3 days). Frosting can be stored in fridge (up to 3-4 days.) Allow it to come to room temp. (30 min.); beat with hand mixer to re-fluff, & use.

Step 13

Frosted cookies should also be stored in the fridge. I like to allow my cookie to come to room temp. (10 min.) before digging in.

Step 14

Freezing the cookies: Freeze unfrosted cookies or frosted cookies (up to 2 mo.); thaw in fridge. (Do not re-freeze.)

Step 15

The chocolate buttercream recipe is slightly adapted from my very favorite recipe from Smitten Kitchen. I’ve made it countless times and it’s just the best.

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