Mix the patty mixture
10 minSoak the breadcrumbs in the milk for 2 minutes. Add the ground beef, squeezed grated onion, salt, and black pepper. Mix for 3 minutes, reaching to the bottom of the bowl and folding the mixture up. It is ready when it holds together in your palm and keeps your finger mark; onion that has not been squeezed dry can make the patties fall apart in the oven.