1. Start by prepping your onions. Thinly slice the sweet onion into rings as thin as you can manage. The thinner, the better—they’ll crisp up into that signature lacy texture. Set aside.
2. Heat 1 tablespoon of vegetable oil in a large skillet over medium-high heat. Once hot, add the onion slices in a single layer. Let them cook undisturbed for about 3 minutes until the bottom edges start to brown and crisp.
3. Carefully flip the onions and continue cooking for another 3-4 minutes until they become golden brown and crisp. Remove from the pan and set aside on paper towels to drain excess oil. This step is crucial for that crispy lacy perfection Mama Lou always insisted on.
4. While the onions are frying, divide the ground beef into 4 equal portions. Roll each into a loose ball without compacting too much. Season each ball with a little salt and pepper.
5. Heat a heavy skillet or cast iron pan over medium-high heat. Once hot, place one beef ball in the pan and immediately smash it down with a sturdy spatula or a burger press to about ¼-inch thickness. Hold pressure for 10-15 seconds to create a nice sear.
6. Cook the patty for 2-3 minutes on the first side without moving it. You’ll see the edges start to brown and crisp beautifully. Flip the patty, add a slice of cheddar cheese, and cook for another 1-2 minutes until the cheese melts and the burger is cooked through.
7. Repeat with the remaining beef balls, adding more oil if needed to prevent sticking.
8. Meanwhile, butter the burger buns lightly and toast them in a clean pan or on a griddle until golden and slightly crisp.
9. Assemble your burger by layering the bottom bun, the cheesy smash patty, a generous handful of the crispy fried onions, and any additional toppings you like. Finish with the top bun.
10. Take a moment to savor the aroma before you bite in—this is where all the love and tradition comes alive.

One tip I learned from cooking alongside Ouma is to resist pressing down on the burger while it cooks. It might be tempting, but letting it develop that crust on its own is the key to flavor and texture. Also, don’t rush the onions; patience here pays off in crispy golden rewards.