Bisquick Sausage Squares (8 servings) 1 cup Buttermilk Bisquick Mix 1/3 cup milk 4 Tablespoons mayonnaise 1 pound Italian pork sausage 1/2 cup chopped onion 1 large egg 2 cups grated Cheddar cheese 2 4-ounce cans chopped green chilies This breakfast casserole is easy and cheesy with just a little bit of heat. It's a little like having a breakfast pizza served on a crust of fluffy biscuit. Using mayonnaise in a baked casserole sounded a little weird to me until I was reminded that mayonnaise is basically just eggs and vegetable oil. The flavor of the squares depends a lot on the sausage that you use. I blended Italian sausage with a little spicy breakfast sausage. I liked it so much that I ate large rectangles instead of squares. (This recipe was submitted in 2006. It was tested and photographed in June 2014.) How To Make Bisquick Sausage Squares Stir Bisquick mix with the milk and 2 Tablespoons of the mayonnaise. Spread into greased 13 x 9-inch pan. In a large frying pan over medium heat, cook the sausage and onion until the sausage is browned (no longer pink) and the onion is tender. Drain the fat and spoon the sausage and onion over the Bisquick mix. Beat the egg with the cheese, chilies and remaining mayonnaise. Spread over meat. Bake at 375 degrees for 25 minutes. Cut into one inch squares. How To Make Bisquick Sausage Squares Cooking Notes: For variation, try Pepper Jack cheese instead of Cheddar. You could also add 1/4 cup of chopped bell pepper along with the onion if desired. Regular or low-fat Bisquick baking mix will work fine if you can't find Buttermilk Bisquick. When spreading out the bottom layer of Bisquick batter in the pan, you may find it helpful to use your fingers. Place fingers under cold tap water first and the batter won't stick to them. A savory breakfast casserole with cheese and sausage. You can choose to make it spicy or mild depending on the green chilies you use. Mr Breakfast would like to thank MrsBuckeye for this recipe. Recipe number 565. Submitted 9/14/2002.