76+ M&M Oreo Cookie Bars Inspiration. The oreo bars are dense, thick, and packed with texture. Preheat oven to 350 degrees. The oreos soften slightly while baking, but retain some crunch. Over 20 m&m's colors to blend and personalize with text, photos, clipart & more. How to make delicious m&m and oreo cookie bars.
Melt the butter in the microwave.
Let it stand 1 minute then add the egg, brown sugar, and vanilla. Preheat oven to 350 degrees. Store in airtight container up to 1 week, or freeze up to 6 months. Lifting with foil, remove from pan. Add flour to brown sugar mixture. Loaded m&m oreo cookie bars. How to make m&m cookie bars. Fold in the crushed oreo cookies. Stir in flour, oreos and m&ms and mix thoroughly with a wooden spoon to combine.
