Crank your oven to 350°F. Get an 8x8 metal pan, spray it briefly with cooking spray, and line the bottom and two sides with parchment paper, letting it hang over the edges to form handles. for easy brownie rescue later. Spritz that parchment too, 'cause nobody likes stickage.
Toss ⅔ cup rolled oats in your blender or food processor and zap 'em till they're like oat flour dust. Pour into a bowl, then mix in ½ teaspoon of kosher salt and ¼ teaspoon of baking soda.Quick tip: If you already have oat flour or all-purpose flour, just use that—no need for additional blending hassle.
No need to rinse the blender—blend 1 cup sugar with ½ cup full-fat cottage cheese till it's silky smooth, like 30 seconds. Scrape into a bigger bowl.
Whisk in 2 eggs and 1 tsp vanilla till it's all shiny and happy, about a minute. Stir in ½ cup natural cocoa powder (the good stuff, not that fake junk). Fold in the oat mix with a spatula till just combined—don't overdo it. Last but sweetest, mix in ¼ cup mini chocolate chips.
Pour into your pan and smooth it out even.
Bake till the edges look set and the middle's glossy but still a tad jiggly, 25-30 mins. Let 'em chill in the pan for a full hour (patience, friend!). Tug those parchment handles to lift 'em out onto a cutting board, then slice into 9 gooey squares. Boom—brownies that taste sinful but sneak in some protein. You're welcome!