Step 1

Preheat the oven to 350 degrees Fahrenheit.

Step 2

In a large saucepan over medium-high heat, stir together ground beef, sausage, and onion until the meats are no longer pink, about 5 minutes. Drain off excess fat.

Step 3

Reduce the heat to low. Season with cayenne pepper and red pepper flakes to taste.

Step 4

Slice the cheese into cubes and add them to the mixture. Stir until melted. Remove from heat.

Step 5

Place rye bread slices onto a baking sheet. Top each piece with a spoonful of meat mixture. Bake for 10 to 12 minutes, or until the bread is toasted and the cheese bubbles. Serve and enjoy!