1-First Step: Preheat your oven to 180°C (350°F) and line four large baking sheets with parchment paper. Gather all ingredients for mise en place. This ensures smooth sailing for busy schedules. Pro tip for vegans: prepare flax eggs now.

2-Second Step: In a stand mixer or large bowl with hand mixer, beat 454g softened butter, 400g granulated sugar, and 400g brown sugar on medium speed until light and fluffy, about 3-4 minutes. Scrape sides often. This creaming builds structure for chewy chocolate oreo cookies.

3-Third Step: Add 4 eggs one at a time, beating well after each, then mix in 4 tsp vanilla. For low-calorie, use 2 whole eggs + 2 whites. The mixture should look glossy.

4-Fourth Step: Sift in 170g cocoa powder, then blend on low. Gradually add 1kg flour, 4 tsp baking soda, and 2 tsp salt. Mix until just combined, avoiding overmixing for tender cookies. Fold in 340g chocolate chips and 300g crushed Oreos. Dough will be thick.

5-Fifth Step: Scoop 1 tbsp portions (for minis) onto sheets, spacing 2 inches apart. Gently press a mini Oreo piece into center if stuffing. For full oreo stuffed cookies, scale up scoops. Chill trays 15-20 minutes to prevent spreading. Gluten-free dough benefits most from chilling.

6-Sixth Step: Bake 8-10 minutes until edges set but centers soft. Rotate sheets halfway. Cool on trays 5 minutes, then wire rack. Internal temp around 70°C for doneness if using thermometer. Makes perfect fudgy texture.

7-Seventh Step: Beat 454g butter until creamy. Gradually add 1.8kg powdered sugar, 400g Oreo crumbs, 4 tsp vanilla, and cream as needed for spreadable frosting. Pipe or spread on cooled cookies. Top with extra crumbs.

8-Final Step: Arrange on catering tray. Let rest briefly before serving. These hold shape for transport. For gatherings, serve with milk. Mix 500g ground beef, 1 chopped onion, 2 minced garlic cloves, 100g breadcrumbs, 1 egg, 2 tbsp tomato paste, 1 tsp salt, ½ tsp black pepper, and 1 tsp dried oregano in a bowl as a savory side. Shape into a loaf and place in a baking dish. Top with 200g tomato sauce mixed with 1 tbsp brown sugar and 1 tsp mustard. Bake for 1 hour, basting occasionally, until internal temperature reaches 70°C. Let rest 10 minutes before slicing. Pair with mashed potatoes or vegetables for complete potluck spread.