A one-of-a-kind two-bite cookie with brown butter, pretzels, M&Ms®, and bittersweet chocolate.
Meanwhile, preheat your oven to 375°.
With a standing or hand-held electric mixer, thoroughly combine the brown sugar, granulated sugar, brown butter (every last bit!), eggs, and pure vanilla extract. Let your mixer run on medium-low for a good 2 minutes to ensure all ingredients are adequately combined.
Slowly add the dry ingredients to the wet ingredients while your mixer runs on a low-level speed. Once these ingredients are fully combined, use a spatula to fold in the M&M's®, crushed pretzels, and chocolate chips.
Drop heaping spoonfuls of the dough into two 24-cup lightly greased, non-stick mini muffin tins or work in batches. Fill each cup to the top or slightly brimming. Bake in a preheated 375° oven for 8-10 minutes or until just golden on top. Let cool in pan before gently twisting to remove. You can freeze the baked cookies for up to 3 weeks and reheat individually in the microwave for 20-30 seconds.
TIP A: You've heard me mention this before, but a little reminder to spoon your flour from its storage container to a measuring cup can't hurt. My mom reinforced this lesson with me, and it's a baking game-changer. When you spoon your flour, it remains light and fluffy and you avoid the risk of over-measuring. If you scoop a measuring cup directly into the flour storage container, then you likely compact the flour and measure more than is needed or intended. Spooning flour is like gently packing brown sugar...it's a must-do each and every time!