Sear the Beef and Onions: Drop the raw ground beef and chopped yellow onions directly into a large, cold, dry skillet and turn the heat to medium-high. Let the heavy meat violently sizzle and brown for exactly 5 minutes, breaking it apart into chunks with a sturdy wooden spoon.
Bloom the Spices: Once the meat gets perfectly crispy and dark brown, toss in the freshly minced garlic and dark chili powder. Vigorously stir the sharp spices directly into the hot beef fat for exactly 1 minute until incredibly fragrant.
Deglaze the Skillet: Pour the warm, low-sodium beef broth fiercely into the hot pan to stop the garlic from burning. Use your wooden spoon to aggressively scrape up all those sticky, savory brown bits hiding on the bottom of the pan.
Add the Pasta and Tomatoes: Dump the wet diced tomatoes, smooth tomato sauce, rinsed kidney beans, and dry macaroni directly into the bubbling broth. Stir the heavy mixture heavily to ensure every single dry noodle is fully submerged.
Simmer and Reduce: Bring the violently bubbling skillet down to a gentle simmer. Cover it tightly with a lid and let it cook for exactly 12 minutes. Remove the lid and stir the heavy mixture twice during this time so the starchy noodles do not burn to the bottom.
Melt the Cheese: Once the pasta becomes perfectly tender and absorbs most of the savory broth, pull the heavy pan completely off the hot stove. Scatter the freshly grated sharp cheddar aggressively over the top and stir it fiercely until the sauce becomes incredibly glossy. Serve immediately!